I.a I - Interstitial/parenchymal lung disease
I.a - Pneumonitis (ILD), acute and/or severe (may cause ARDS) I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.c I - Interstitial/parenchymal lung disease
I.c - Eosinophilic pneumonia (pulmonary infiltrates and eosinophilia) I.d I - Interstitial/parenchymal lung disease
I.d - Organizing pneumonia pattern (an area or areas of consolidation on imaging) I.e I - Interstitial/parenchymal lung disease
I.e - Acute eosinophilic pneumonia (AEP) I.f I - Interstitial/parenchymal lung disease
I.f - Acute fibrinous organizing pneumonia (AFOP) I.g I - Interstitial/parenchymal lung disease
I.g - Pulmonary fibrosis I.h I - Interstitial/parenchymal lung disease
I.h - Subclinical pulmonary infiltrates/ILD I.k I - Interstitial/parenchymal lung disease
I.k - Lung nodule or nodules I.l I - Interstitial/parenchymal lung disease
I.l - Diffuse alveolar damage (DAD) (see alsoo under IIb and XVf) I.s I - Interstitial/parenchymal lung disease
I.s - A mass or masses I.u I - Interstitial/parenchymal lung disease
I.u - Relapsing or migrating pneumonitis/pneumonia (see also Id) I.w I - Interstitial/parenchymal lung disease
I.w - Rapidly progressive ILD/pulmonary fibrosis (Hamman-Rich syndrome) I.z I - Interstitial/parenchymal lung disease
I.z - An area or areas of consolidation I.aa I - Interstitial/parenchymal lung disease
I.aa - Delayed ILD, -pneumonitis, -fibrosis I.ao I - Interstitial/parenchymal lung disease
I.ao - Pulmonary infiltrates I.at I - Interstitial/parenchymal lung disease
I.at - Amiodarone pulmonary toxicity - Amiodarone lung I.ax I - Interstitial/parenchymal lung disease
I.ax - Chronic pneumonitis I.ay I - Interstitial/parenchymal lung disease
I.ay - Unilateral interstitial lung disease II.b II - Pulmonary edema - Acute lung injury - ARDS
II.b - ARDS - Acute lung injury II.l II - Pulmonary edema - Acute lung injury - ARDS
II.l - Postoperative ARDS III.a III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.a - Alveolar hemorrhage (AH), diffuse AH (DAH) III.c III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.c - Hemoptysis IV.a IV - Airway involvement
IV.a - Bronchospasm - Wheezing - Asthma IV.d IV - Airway involvement
IV.d - Cough (lone) IV.r IV - Airway involvement
IV.r - Airway pigmentation (black, bluish, petechial) V.a V - Pleural and/or pericardial involvement
V.a - Pleural effusion (uni- or bilateral) (can accompany DI-LDs) V.c V - Pleural and/or pericardial involvement
V.c - Pleural thickening V.d V - Pleural and/or pericardial involvement
V.d - Pleural/pericardial effusion, ANA positive (DI lupus) V.t V - Pleural and/or pericardial involvement
V.t - The apical cap VI.a VI - Pulmonary vasculopathies
VI.a - Pulmonary embolism - Venous thrombosis/thromboembolism VI.i VI - Pulmonary vasculopathies
VI.i - Acute pulmonary hypertension VIII.a VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.a - Angioedema (may cause UAO, asphyxia and death) IX.a IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.a - Diaphragm/inspiratory muscle weakness/paralysis (w/wo ARF) IX.d IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.d - Respiratory failure from ventilatory depression (due to neuromuscular blockade/paralysis) IX.ai IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.ai - Acute respiratory failure (hypoxemia, acidosis) from myxedema (-coma) X.d X - Systemic/Distant conditions, syndromes and reactions
X.d - Lupus - Lupus syndrome (see also Vd) X.f X - Systemic/Distant conditions, syndromes and reactions
X.f - Anaphylaxis-Anaphylactoid reaction (can be fatal) X.q X - Systemic/Distant conditions, syndromes and reactions
X.q - Systemic inflammatory response XI.c XI - Miscellaneous
XI.c - Pleuritic chest pain XI.f XI - Miscellaneous
XI.f - Bluish, pseudocyanotic skin discoloration XI.bq XI - Miscellaneous
XI.bq - Platypnea-orthodeoxia XII.a XII - Cardiovascular involvement / toxicity
XII.a - Left or biventricular dysfunction/failure XII.c XII - Cardiovascular involvement / toxicity
XII.c - Pericardial effusion (w/wo tamponade) XII.e XII - Cardiovascular involvement / toxicity
XII.e - Takotsubo (stress) cardiomyopathy XII.l XII - Cardiovascular involvement / toxicity
XII.l - Cardiac arrhythmias or dysrhythmias (AF, VT, VF, TdP) XII.n XII - Cardiovascular involvement / toxicity
XII.n - Cardiovascular collapse - Cardiogenic shock - Hypotension XII.p XII - Cardiovascular involvement / toxicity
XII.p - QTc prolongation XII.t XII - Cardiovascular involvement / toxicity
XII.t - Torsades de pointe XII.af XII - Cardiovascular involvement / toxicity
XII.af - Coronary vasospasm - Vasospastic angina XII.au XII - Cardiovascular involvement / toxicity
XII.au - Heart failure (thyrotoxicosis-, thyroid storm-mediated) XV.a XV - Pathology
XV.a - Path: NSIP-cellular pattern (see also Ia, Ib) XV.b XV - Pathology
XV.b - Path: Eosinophilic pneumonia (subacute or acute) (see also Ic) XV.c XV - Pathology
XV.c - Path: Organizing pneumonia (OP/BOOP) pattern (see also Id) XV.d XV - Pathology
XV.d - Path: Acute fibrinous organizing pneumonia (AFOP-pattern) (see also If) XV.f XV - Pathology
XV.f - Path: Diffuse alveolar damage (DAD-pattern) (see also IL) XV.g XV - Pathology
XV.g - Path: Alveolar hemorrhage (see also IIIa) XV.h XV - Pathology
XV.h - Path: NSIP-fibrotic pattern XV.i XV - Pathology
XV.i - Path: Pneumocyte atypia (reactive epithelial cells) (a.k.a. the "Napoleon Hat" sign) XV.j XV - Pathology
XV.j - Path: Pulmonary fibrosis (UIP-pattern) XV.k XV - Pathology
XV.k - Path: Desquamative interstitial pneumonia (DIP-pattern) XV.m XV - Pathology
XV.m - Path: Lymphoid hyperplasia (including nodular- or a lymphocytic interstitial pneumonia pattern) XV.o XV - Pathology
XV.o - Path: Endogenous lipoid pneumonia (phospholipidosis) XV.r XV - Pathology
XV.r - Path: Smudged geographic necrosis XV.ao XV - Pathology
XV.ao - Path: Pleuritis, pleural fibrosis XV.bt XV - Pathology
XV.bt - Path: Histiocytic proliferation XVI.b XVI - Imaging
XVI.b - Imaging: Ground-glass opacities (GGO) / shadowing XVI.i XVI - Imaging
XVI.i - Imaging: An area or areas of involvement with a recognizable anatomic distribution XVI.j XVI - Imaging
XVI.j - Imaging: Wandering (migratory) pulmonary opacities XVI.n XVI - Imaging
XVI.n - Imaging: Intralobular septal thickening - Crazy paving XVI.s XVI - Imaging
XVI.s - Imaging: An area or areas of involvement with high attenuation numbers or metallic density XVI.w XVI - Imaging
XVI.w - Imaging: Lung nodule or nodules XVI.aa XVI - Imaging
XVI.aa - Imaging: Nodules, mass or masses with a central area of low attenuation (see also under XVIaa) XVI.ab XVI - Imaging
XVI.ab - Imaging: Cavitating/cavitary lung nodule, mass or nodules (see also Iq, XIs, XIIi, XVIaa and XVIIp) XVI.ay XVI - Imaging
XVI.ay - Imaging: Asymmetrical, predominantly unilateral involvement XVI.az XVI - Imaging
XVI.az - Imaging: Solitary pulmonary nodule XVI.bj XVI - Imaging
XVI.bj - Imaging: Atelectasis (a combination of increased density and volume loss. Typically lobar) XVI.bq XVI - Imaging
XVI.bq - Imaging: A pattern consistent with pleuroparenchymal fibroelastosis XVI.bt XVI - Imaging
XVI.bt - Imaging: A subsolid lung nodule or nodules XVI.bx XVI - Imaging
XVI.bx - Imaging: Waxing and waning nodules XVII.e XVII - Infections & related conditions
XVII.e - Pneumocystis jiroveci pneumonia XVIII.b XVIII - Distinctive patterns - 'Eye-catchers'
XVIII.b - Eye catcher: Electron-dense area or areas of consolidation on unenhanced chest CT XVIII.j XVIII - Distinctive patterns - 'Eye-catchers'
XVIII.j - Eye-catcher: Avid lung uptake on 18F-PET-CT XVIII.k XVIII - Distinctive patterns - 'Eye-catchers'
XVIII.k - Eye-catcher: An electron-dense liver on unenhanced CT XVIII.p XVIII - Distinctive patterns - 'Eye-catchers'
XVIII.p - Eye-catcher: An electron-dense ('white') thyroid XIX.a XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.a - BAL: An excess proportion of lymphocytes XIX.b XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.b - BAL: An excess proportion of neutrophils XIX.c XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.c - BAL: An excess proportion of eosinophils XIX.e XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.e - BAL: Stainable iron in macrophages XIX.f XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.f - BAL: Foamy macrophages XIX.m XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.m - BAL: A normal cell differential XIX.p XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.p - BAL: Lamellar bodies in AM on EM

I.c I - Interstitial/parenchymal lung disease
I.c - Eosinophilic pneumonia (pulmonary infiltrates and eosinophilia) I.e I - Interstitial/parenchymal lung disease
I.e - Acute eosinophilic pneumonia (AEP) II.b II - Pulmonary edema - Acute lung injury - ARDS
II.b - ARDS - Acute lung injury X.f X - Systemic/Distant conditions, syndromes and reactions
X.f - Anaphylaxis-Anaphylactoid reaction (can be fatal) XV.b XV - Pathology
XV.b - Path: Eosinophilic pneumonia (subacute or acute) (see also Ic)

I.c I - Interstitial/parenchymal lung disease
I.c - Eosinophilic pneumonia (pulmonary infiltrates and eosinophilia) I.d I - Interstitial/parenchymal lung disease
I.d - Organizing pneumonia pattern (an area or areas of consolidation on imaging) V.m V - Pleural and/or pericardial involvement
V.m - Pleuropericarditis - Pleuropericardial effusion (ANA unknown or negative) XV.b XV - Pathology
XV.b - Path: Eosinophilic pneumonia (subacute or acute) (see also Ic) XV.c XV - Pathology
XV.c - Path: Organizing pneumonia (OP/BOOP) pattern (see also Id) XV.ac XV - Pathology
XV.ac - Path: Pulmonary vasculitis other than capillaritis

I.a I - Interstitial/parenchymal lung disease
I.a - Pneumonitis (ILD), acute and/or severe (may cause ARDS) I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.c I - Interstitial/parenchymal lung disease
I.c - Eosinophilic pneumonia (pulmonary infiltrates and eosinophilia) I.d I - Interstitial/parenchymal lung disease
I.d - Organizing pneumonia pattern (an area or areas of consolidation on imaging) I.f I - Interstitial/parenchymal lung disease
I.f - Acute fibrinous organizing pneumonia (AFOP) I.g I - Interstitial/parenchymal lung disease
I.g - Pulmonary fibrosis I.k I - Interstitial/parenchymal lung disease
I.k - Lung nodule or nodules I.l I - Interstitial/parenchymal lung disease
I.l - Diffuse alveolar damage (DAD) (see alsoo under IIb and XVf) I.p I - Interstitial/parenchymal lung disease
I.p - Fatal pneumonitis (ILD) I.v I - Interstitial/parenchymal lung disease
I.v - Abnormal lung function/pulmonary physiology (PFTs) without necessarily imaging or clinical evidence I.w I - Interstitial/parenchymal lung disease
I.w - Rapidly progressive ILD/pulmonary fibrosis (Hamman-Rich syndrome) II.b II - Pulmonary edema - Acute lung injury - ARDS
II.b - ARDS - Acute lung injury II.u II - Pulmonary edema - Acute lung injury - ARDS
II.u - Acute respiratory failure (e.g. from ARDS, ILD, PIE, OP, pulmonary edema or bronchospasm) requiring ECMO V.f V - Pleural and/or pericardial involvement
V.f - Pneumothorax V.p V - Pleural and/or pericardial involvement
V.p - Pleuroparenchymal fibroelastosis (PPFE) V.z V - Pleural and/or pericardial involvement
V.z - Pneumothorax (associated or secondary to drug-induced ILD) VI.c VI - Pulmonary vasculopathies
VI.c - Pulmonary veno-occlusive disease VI.f VI - Pulmonary vasculopathies
VI.f - Hemolytic and uremic syndrome (HUS). See also under Xaf VII.e VII - Mediastinal involvement
VII.e - Granulomatous mediastinal lymphadenopathy VII.h VII - Mediastinal involvement
VII.h - Pneumomediastinum XI.b XI - Miscellaneous
XI.b - Chest pain (acute or subacute), lone or prominent XI.c XI - Miscellaneous
XI.c - Pleuritic chest pain XV.a XV - Pathology
XV.a - Path: NSIP-cellular pattern (see also Ia, Ib) XV.b XV - Pathology
XV.b - Path: Eosinophilic pneumonia (subacute or acute) (see also Ic) XV.c XV - Pathology
XV.c - Path: Organizing pneumonia (OP/BOOP) pattern (see also Id) XV.d XV - Pathology
XV.d - Path: Acute fibrinous organizing pneumonia (AFOP-pattern) (see also If) XV.f XV - Pathology
XV.f - Path: Diffuse alveolar damage (DAD-pattern) (see also IL) XV.h XV - Pathology
XV.h - Path: NSIP-fibrotic pattern XV.i XV - Pathology
XV.i - Path: Pneumocyte atypia (reactive epithelial cells) (a.k.a. the "Napoleon Hat" sign) XV.j XV - Pathology
XV.j - Path: Pulmonary fibrosis (UIP-pattern) XV.l XV - Pathology
XV.l - Path: Pulmonary fibrosis (not otherwise specified or unclassifiable) XV.ax XV - Pathology
XV.ax - Path: Focal organizing pneumonia XV.be XV - Pathology
XV.be - Path: Interstitial pulmonary edema XV.bf XV - Pathology
XV.bf - Path: Pulmonary necrotizing granuloma or granulomas XVI.a XVI - Imaging
XVI.a - Imaging: Diffuse haze XVI.b XVI - Imaging
XVI.b - Imaging: Ground-glass opacities (GGO) / shadowing XVI.e XVI - Imaging
XVI.e - Imaging: Pulmonary opacities with a subpleural distribution XVI.k XVI - Imaging
XVI.k - Imaging: An area or areas of consolidation XVI.w XVI - Imaging
XVI.w - Imaging: Lung nodule or nodules XVI.ab XVI - Imaging
XVI.ab - Imaging: Cavitating/cavitary lung nodule, mass or nodules (see also Iq, XIs, XIIi, XVIaa and XVIIp) XVI.af XVI - Imaging
XVI.af - Imaging: Lung cysts or bullae (see also XVI ah/bf) XVI.bl XVI - Imaging
XVI.bl - Imaging: An area or areas of avid tracer uptake in the lung/chest on 18F-PET scan XVIII.j XVIII - Distinctive patterns - 'Eye-catchers'
XVIII.j - Eye-catcher: Avid lung uptake on 18F-PET-CT XIX.b XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.b - BAL: An excess proportion of neutrophils XXIV.a XXIV - Veterinary medicine
XXIV.a - Veterinary: Pneumonitis - Interstitial lung disease XXIV.b XXIV - Veterinary medicine
XXIV.b - Veterinary: Pulmonary fibrosis

I.a I - Interstitial/parenchymal lung disease
I.a - Pneumonitis (ILD), acute and/or severe (may cause ARDS) I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.c I - Interstitial/parenchymal lung disease
I.c - Eosinophilic pneumonia (pulmonary infiltrates and eosinophilia) I.e I - Interstitial/parenchymal lung disease
I.e - Acute eosinophilic pneumonia (AEP) II.b II - Pulmonary edema - Acute lung injury - ARDS
II.b - ARDS - Acute lung injury IV.a IV - Airway involvement
IV.a - Bronchospasm - Wheezing - Asthma X.g X - Systemic/Distant conditions, syndromes and reactions
X.g - Hypersensitivity reaction (may manifest with fever and/or skin, throat or airway involvement) XI.b XI - Miscellaneous
XI.b - Chest pain (acute or subacute), lone or prominent XV.b XV - Pathology
XV.b - Path: Eosinophilic pneumonia (subacute or acute) (see also Ic) XVII.e XVII - Infections & related conditions
XVII.e - Pneumocystis jiroveci pneumonia XXI.c XXI - Rechallenge data
XXI.c - Tolerance can be induced successfully starting with minute dosage of the drug

I.c I - Interstitial/parenchymal lung disease
I.c - Eosinophilic pneumonia (pulmonary infiltrates and eosinophilia) XV.b XV - Pathology
XV.b - Path: Eosinophilic pneumonia (subacute or acute) (see also Ic)

I.c I - Interstitial/parenchymal lung disease
I.c - Eosinophilic pneumonia (pulmonary infiltrates and eosinophilia) III.a III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.a - Alveolar hemorrhage (AH), diffuse AH (DAH) XV.b XV - Pathology
XV.b - Path: Eosinophilic pneumonia (subacute or acute) (see also Ic)

I.a I - Interstitial/parenchymal lung disease
I.a - Pneumonitis (ILD), acute and/or severe (may cause ARDS) I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.c I - Interstitial/parenchymal lung disease
I.c - Eosinophilic pneumonia (pulmonary infiltrates and eosinophilia) I.d I - Interstitial/parenchymal lung disease
I.d - Organizing pneumonia pattern (an area or areas of consolidation on imaging) I.k I - Interstitial/parenchymal lung disease
I.k - Lung nodule or nodules I.l I - Interstitial/parenchymal lung disease
I.l - Diffuse alveolar damage (DAD) (see alsoo under IIb and XVf) II.a II - Pulmonary edema - Acute lung injury - ARDS
II.a - Pulmonary edema, noncardiogenic (NCPE) II.b II - Pulmonary edema - Acute lung injury - ARDS
II.b - ARDS - Acute lung injury IV.a IV - Airway involvement
IV.a - Bronchospasm - Wheezing - Asthma V.a V - Pleural and/or pericardial involvement
V.a - Pleural effusion (uni- or bilateral) (can accompany DI-LDs) V.d V - Pleural and/or pericardial involvement
V.d - Pleural/pericardial effusion, ANA positive (DI lupus) VII.a VII - Mediastinal involvement
VII.a - Lymphadenopathy (intrathoracic) VII.b VII - Mediastinal involvement
VII.b - Lymphadenopathy with reactive changes X.a X - Systemic/Distant conditions, syndromes and reactions
X.a - DRES syndrome - DRESS-like reaction X.d X - Systemic/Distant conditions, syndromes and reactions
X.d - Lupus - Lupus syndrome (see also Vd) X.m X - Systemic/Distant conditions, syndromes and reactions
X.m - Vascultis (pulmonary, extrathoracic or systemic)-ANCA status unknown or negative) XII.a XII - Cardiovascular involvement / toxicity
XII.a - Left or biventricular dysfunction/failure XII.c XII - Cardiovascular involvement / toxicity
XII.c - Pericardial effusion (w/wo tamponade) XII.d XII - Cardiovascular involvement / toxicity
XII.d - Myocarditis (can be fulminant) XII.l XII - Cardiovascular involvement / toxicity
XII.l - Cardiac arrhythmias or dysrhythmias (AF, VT, VF, TdP) XII.s XII - Cardiovascular involvement / toxicity
XII.s - Heart block (bundle branch- or AV-) XIII.b XIII - Neoplastic conditions
XIII.b - Lymphoproliferative disease (pulmonary, endobronchial, endothoracic) XV.a XV - Pathology
XV.a - Path: NSIP-cellular pattern (see also Ia, Ib) XV.b XV - Pathology
XV.b - Path: Eosinophilic pneumonia (subacute or acute) (see also Ic) XV.c XV - Pathology
XV.c - Path: Organizing pneumonia (OP/BOOP) pattern (see also Id) XV.e XV - Pathology
XV.e - Path: ILD with a granulomatous component (see also Im) XVI.ab XVI - Imaging
XVI.ab - Imaging: Cavitating/cavitary lung nodule, mass or nodules (see also Iq, XIs, XIIi, XVIaa and XVIIp)

I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.c I - Interstitial/parenchymal lung disease
I.c - Eosinophilic pneumonia (pulmonary infiltrates and eosinophilia) I.d I - Interstitial/parenchymal lung disease
I.d - Organizing pneumonia pattern (an area or areas of consolidation on imaging) I.e I - Interstitial/parenchymal lung disease
I.e - Acute eosinophilic pneumonia (AEP) II.b II - Pulmonary edema - Acute lung injury - ARDS
II.b - ARDS - Acute lung injury VI.b VI - Pulmonary vasculopathies
VI.b - Pulmonary arterial hypertension IX.a IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.a - Diaphragm/inspiratory muscle weakness/paralysis (w/wo ARF) IX.i IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.i - Respiratory arrest - Apnea X.a X - Systemic/Distant conditions, syndromes and reactions
X.a - DRES syndrome - DRESS-like reaction XI.r XI - Miscellaneous
XI.r - Death following exposure or poisoning XII.f XII - Cardiovascular involvement / toxicity
XII.f - Cardiomyopathy (acute, subacute, chronic) XII.h XII - Cardiovascular involvement / toxicity
XII.h - Eosinophilic myocarditis XII.l XII - Cardiovascular involvement / toxicity
XII.l - Cardiac arrhythmias or dysrhythmias (AF, VT, VF, TdP) XII.m XII - Cardiovascular involvement / toxicity
XII.m - Cardiac- cardiorespiratory/pulmonary arrest XII.p XII - Cardiovascular involvement / toxicity
XII.p - QTc prolongation XII.s XII - Cardiovascular involvement / toxicity
XII.s - Heart block (bundle branch- or AV-) XIV.a XIV - Hemoglobinopathies - Abnormal hemoglobin states (acquired)
XIV.a - Methemoglobinemia XV.b XV - Pathology
XV.b - Path: Eosinophilic pneumonia (subacute or acute) (see also Ic) XV.c XV - Pathology
XV.c - Path: Organizing pneumonia (OP/BOOP) pattern (see also Id) XIX.c XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.c - BAL: An excess proportion of eosinophils

I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.c I - Interstitial/parenchymal lung disease
I.c - Eosinophilic pneumonia (pulmonary infiltrates and eosinophilia) VIII.c VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.c - Upper airway obstruction other than angioedema or hematoma X.f X - Systemic/Distant conditions, syndromes and reactions
X.f - Anaphylaxis-Anaphylactoid reaction (can be fatal) XV.b XV - Pathology
XV.b - Path: Eosinophilic pneumonia (subacute or acute) (see also Ic) XV.e XV - Pathology
XV.e - Path: ILD with a granulomatous component (see also Im)

I.c I - Interstitial/parenchymal lung disease
I.c - Eosinophilic pneumonia (pulmonary infiltrates and eosinophilia) I.d I - Interstitial/parenchymal lung disease
I.d - Organizing pneumonia pattern (an area or areas of consolidation on imaging) I.e I - Interstitial/parenchymal lung disease
I.e - Acute eosinophilic pneumonia (AEP) I.t I - Interstitial/parenchymal lung disease
I.t - Pneumoconiosis (silicosis, talcosis...) I.z I - Interstitial/parenchymal lung disease
I.z - An area or areas of consolidation II.a II - Pulmonary edema - Acute lung injury - ARDS
II.a - Pulmonary edema, noncardiogenic (NCPE) II.d II - Pulmonary edema - Acute lung injury - ARDS
II.d - Pulmonary edema, cardiogenic III.a III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.a - Alveolar hemorrhage (AH), diffuse AH (DAH) III.b III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.b - Pneumorenal syndrome (w/wo ANCAs) III.c III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.c - Hemoptysis III.n III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.n - Alveolar hemorrhage (subclinical, or as a BAL feature) IV.a IV - Airway involvement
IV.a - Bronchospasm - Wheezing - Asthma IV.f IV - Airway involvement
IV.f - Severe or catastrophic bronchospasm or asthma attack (can be fatal) IV.o IV - Airway involvement
IV.o - Airway hyperresponsiveness V.f V - Pleural and/or pericardial involvement
V.f - Pneumothorax V.ab V - Pleural and/or pericardial involvement
V.ab - Pneumothorax, bilateral VI.a VI - Pulmonary vasculopathies
VI.a - Pulmonary embolism - Venous thrombosis/thromboembolism VI.b VI - Pulmonary vasculopathies
VI.b - Pulmonary arterial hypertension VI.l VI - Pulmonary vasculopathies
VI.l - Acute pulmonary vasoconstriction and PHT VII.h VII - Mediastinal involvement
VII.h - Pneumomediastinum VIII.a VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.a - Angioedema (may cause UAO, asphyxia and death) VIII.c VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.c - Upper airway obstruction other than angioedema or hematoma VIII.i VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.i - Midline destructive lesions VIII.w VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.w - Uvulitis, uvular edema VIII.ah VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.ah - Tracheal polyps VIII.ai VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.ai - Nasal, palatal and/or pharyngeal pathology VIII.ak VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.ak - Rhinitis medicamentosa VIII.ap VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.ap - Airway foreign body IX.k IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.k - Trismus (lockjaw) IX.o IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.o - Pneumorachis X.f X - Systemic/Distant conditions, syndromes and reactions
X.f - Anaphylaxis-Anaphylactoid reaction (can be fatal) X.h X - Systemic/Distant conditions, syndromes and reactions
X.h - Eosinophilic granulomatosis with polyangiitis (Churg-Strauss) X.j X - Systemic/Distant conditions, syndromes and reactions
X.j - Myopathy-Myositis-Polymyositis (see also under Xba) X.m X - Systemic/Distant conditions, syndromes and reactions
X.m - Vascultis (pulmonary, extrathoracic or systemic)-ANCA status unknown or negative) X.o X - Systemic/Distant conditions, syndromes and reactions
X.o - Neutrophilic dermatosis (Pyoderma, Sweet syndrome) X.s X - Systemic/Distant conditions, syndromes and reactions
X.s - Vasculitis, pulmonary (w/wo AH), extrapulmonary, systemic: ANCA-positive X.u X - Systemic/Distant conditions, syndromes and reactions
X.u - Multiple organ dysfunction/failure (MODS/MOF) X.x X - Systemic/Distant conditions, syndromes and reactions
X.x - Subclinical ANCA positivity X.ac X - Systemic/Distant conditions, syndromes and reactions
X.ac - Anti-GBM antibody disease (Goodpasture-like or flare of preexisting GS) X.ad X - Systemic/Distant conditions, syndromes and reactions
X.ad - Skin purpura, ecchymoses or necrosis X.as X - Systemic/Distant conditions, syndromes and reactions
X.as - Scleroderma renal crisis XI.b XI - Miscellaneous
XI.b - Chest pain (acute or subacute), lone or prominent XI.m XI - Miscellaneous
XI.m - Pulmonary emphysema - Lung cysts or bullae XI.n XI - Miscellaneous
XI.n - Neutropenia, agranulocytosis (w/wo infection/sepsis) XI.r XI - Miscellaneous
XI.r - Death following exposure or poisoning XI.ae XI - Miscellaneous
XI.ae - Barotrauma (incl. pneumothorax, pneumomediastinum, interstitial ephysema...) XI.az XI - Miscellaneous
XI.az - Sneezing (may cause pulmonary barotrauma) XII.a XII - Cardiovascular involvement / toxicity
XII.a - Left or biventricular dysfunction/failure XII.e XII - Cardiovascular involvement / toxicity
XII.e - Takotsubo (stress) cardiomyopathy XII.f XII - Cardiovascular involvement / toxicity
XII.f - Cardiomyopathy (acute, subacute, chronic) XII.g XII - Cardiovascular involvement / toxicity
XII.g - Coronary artery disease (acute) - Myocardial ischemia/infarction XII.l XII - Cardiovascular involvement / toxicity
XII.l - Cardiac arrhythmias or dysrhythmias (AF, VT, VF, TdP) XII.y XII - Cardiovascular involvement / toxicity
XII.y - Pneumopericardium XII.ae XII - Cardiovascular involvement / toxicity
XII.ae - Aortic dissection XII.af XII - Cardiovascular involvement / toxicity
XII.af - Coronary vasospasm - Vasospastic angina XII.aj XII - Cardiovascular involvement / toxicity
XII.aj - Systemic arterial thrombosis XII.ap XII - Cardiovascular involvement / toxicity
XII.ap - Coronary artery dissection XIV.c XIV - Hemoglobinopathies - Abnormal hemoglobin states (acquired)
XIV.c - Carboxyhemoglobinemia XV.b XV - Pathology
XV.b - Path: Eosinophilic pneumonia (subacute or acute) (see also Ic) XV.g XV - Pathology
XV.g - Path: Alveolar hemorrhage (see also IIIa) XV.h XV - Pathology
XV.h - Path: NSIP-fibrotic pattern XV.s XV - Pathology
XV.s - Path: Pneumoconiosis (silicosis, talcosis, talcoma) XV.w XV - Pathology
XV.w - Path: Pulmonary edema (see also II/IIa) XV.aw XV - Pathology
XV.aw - Path: Skin vasculopathy/vasculitis/fibrin thrombi XVI.k XVI - Imaging
XVI.k - Imaging: An area or areas of consolidation XVII.b XVII - Infections & related conditions
XVII.b - Opportunistic pulmonary/systemic infections

I.a I - Interstitial/parenchymal lung disease
I.a - Pneumonitis (ILD), acute and/or severe (may cause ARDS) I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.c I - Interstitial/parenchymal lung disease
I.c - Eosinophilic pneumonia (pulmonary infiltrates and eosinophilia) I.d I - Interstitial/parenchymal lung disease
I.d - Organizing pneumonia pattern (an area or areas of consolidation on imaging) I.e I - Interstitial/parenchymal lung disease
I.e - Acute eosinophilic pneumonia (AEP) I.g I - Interstitial/parenchymal lung disease
I.g - Pulmonary fibrosis II.a II - Pulmonary edema - Acute lung injury - ARDS
II.a - Pulmonary edema, noncardiogenic (NCPE) II.b II - Pulmonary edema - Acute lung injury - ARDS
II.b - ARDS - Acute lung injury II.j II - Pulmonary edema - Acute lung injury - ARDS
II.j - Transient pulmonary opacities/infiltrates (see also under Iav) III.a III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.a - Alveolar hemorrhage (AH), diffuse AH (DAH) IV.a IV - Airway involvement
IV.a - Bronchospasm - Wheezing - Asthma IV.c IV - Airway involvement
IV.c - Obliterative bronchiolitis (a pattern consistent with) (see also IVn, XVx) IV.e IV - Airway involvement
IV.e - Cough (acute, violent, explosive) IV.f IV - Airway involvement
IV.f - Severe or catastrophic bronchospasm or asthma attack (can be fatal) V.b V - Pleural and/or pericardial involvement
V.b - Eosinophilic pleural effusion V.f V - Pleural and/or pericardial involvement
V.f - Pneumothorax V.x V - Pleural and/or pericardial involvement
V.x - Black pleural effusion VI.a VI - Pulmonary vasculopathies
VI.a - Pulmonary embolism - Venous thrombosis/thromboembolism VII.h VII - Mediastinal involvement
VII.h - Pneumomediastinum VIII.a VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.a - Angioedema (may cause UAO, asphyxia and death) VIII.d VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.d - Thermal (burns, frostbite), chemical or caustic injury on the face, mouth, tongue, pharynx or upper airway VIII.m VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.m - Drug foreign body in the airway VIII.ac VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.ac - Retropharyngeal emphysema VIII.ap VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.ap - Airway foreign body X.ac X - Systemic/Distant conditions, syndromes and reactions
X.ac - Anti-GBM antibody disease (Goodpasture-like or flare of preexisting GS) XI.b XI - Miscellaneous
XI.b - Chest pain (acute or subacute), lone or prominent XI.c XI - Miscellaneous
XI.c - Pleuritic chest pain XI.bp XI - Miscellaneous
XI.bp - Lung herniation XII.g XII - Cardiovascular involvement / toxicity
XII.g - Coronary artery disease (acute) - Myocardial ischemia/infarction XII.l XII - Cardiovascular involvement / toxicity
XII.l - Cardiac arrhythmias or dysrhythmias (AF, VT, VF, TdP) XII.aa XII - Cardiovascular involvement / toxicity
XII.aa - Arterial (aorta, limb) vasoconstriction and/or ischemia, acute XII.ae XII - Cardiovascular involvement / toxicity
XII.ae - Aortic dissection XV.b XV - Pathology
XV.b - Path: Eosinophilic pneumonia (subacute or acute) (see also Ic) XV.e XV - Pathology
XV.e - Path: ILD with a granulomatous component (see also Im) XV.g XV - Pathology
XV.g - Path: Alveolar hemorrhage (see also IIIa) XV.q XV - Pathology
XV.q - Path: Foreign body deposits/granulomatous reaction XV.s XV - Pathology
XV.s - Path: Pneumoconiosis (silicosis, talcosis, talcoma) XV.bb XV - Pathology
XV.bb - Path: Airway inflammation XV.bj XV - Pathology
XV.bj - Path: Alveolar carbonaceous material or deposits XVI.b XVI - Imaging
XVI.b - Imaging: Ground-glass opacities (GGO) / shadowing XVI.d XVI - Imaging
XVI.d - Imaging: Alveolar opacities or haze with a batwing or butterfly distribution XVI.k XVI - Imaging
XVI.k - Imaging: An area or areas of consolidation XVIII.l XVIII - Distinctive patterns - 'Eye-catchers'
XVIII.l - Eye catcher: Candy-cane esophagus

I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.c I - Interstitial/parenchymal lung disease
I.c - Eosinophilic pneumonia (pulmonary infiltrates and eosinophilia) I.d I - Interstitial/parenchymal lung disease
I.d - Organizing pneumonia pattern (an area or areas of consolidation on imaging) I.e I - Interstitial/parenchymal lung disease
I.e - Acute eosinophilic pneumonia (AEP) I.k I - Interstitial/parenchymal lung disease
I.k - Lung nodule or nodules I.x I - Interstitial/parenchymal lung disease
I.x - Pleuroparenchymal fibroelastosis (PPFE) I.z I - Interstitial/parenchymal lung disease
I.z - An area or areas of consolidation II.b II - Pulmonary edema - Acute lung injury - ARDS
II.b - ARDS - Acute lung injury VIII.a VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.a - Angioedema (may cause UAO, asphyxia and death) X.f X - Systemic/Distant conditions, syndromes and reactions
X.f - Anaphylaxis-Anaphylactoid reaction (can be fatal) XV.b XV - Pathology
XV.b - Path: Eosinophilic pneumonia (subacute or acute) (see also Ic) XV.c XV - Pathology
XV.c - Path: Organizing pneumonia (OP/BOOP) pattern (see also Id) XV.d XV - Pathology
XV.d - Path: Acute fibrinous organizing pneumonia (AFOP-pattern) (see also If) XVI.k XVI - Imaging
XVI.k - Imaging: An area or areas of consolidation XIX.b XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.b - BAL: An excess proportion of neutrophils XIX.c XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.c - BAL: An excess proportion of eosinophils XXI.e XXI - Rechallenge data
XXI.e - Rechallenge may not necessarily lead to relapse of AE/ILD

I.c I - Interstitial/parenchymal lung disease
I.c - Eosinophilic pneumonia (pulmonary infiltrates and eosinophilia) V.b V - Pleural and/or pericardial involvement
V.b - Eosinophilic pleural effusion X.h X - Systemic/Distant conditions, syndromes and reactions
X.h - Eosinophilic granulomatosis with polyangiitis (Churg-Strauss) X.k X - Systemic/Distant conditions, syndromes and reactions
X.k - Sarcoid-like granulomatosis (endo-/extrathoracic) X.o X - Systemic/Distant conditions, syndromes and reactions
X.o - Neutrophilic dermatosis (Pyoderma, Sweet syndrome) XV.b XV - Pathology
XV.b - Path: Eosinophilic pneumonia (subacute or acute) (see also Ic) XV.e XV - Pathology
XV.e - Path: ILD with a granulomatous component (see also Im)

I.a I - Interstitial/parenchymal lung disease
I.a - Pneumonitis (ILD), acute and/or severe (may cause ARDS) I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.c I - Interstitial/parenchymal lung disease
I.c - Eosinophilic pneumonia (pulmonary infiltrates and eosinophilia) I.d I - Interstitial/parenchymal lung disease
I.d - Organizing pneumonia pattern (an area or areas of consolidation on imaging) I.e I - Interstitial/parenchymal lung disease
I.e - Acute eosinophilic pneumonia (AEP) I.f I - Interstitial/parenchymal lung disease
I.f - Acute fibrinous organizing pneumonia (AFOP) I.g I - Interstitial/parenchymal lung disease
I.g - Pulmonary fibrosis I.u I - Interstitial/parenchymal lung disease
I.u - Relapsing or migrating pneumonitis/pneumonia (see also Id) I.v I - Interstitial/parenchymal lung disease
I.v - Abnormal lung function/pulmonary physiology (PFTs) without necessarily imaging or clinical evidence I.w I - Interstitial/parenchymal lung disease
I.w - Rapidly progressive ILD/pulmonary fibrosis (Hamman-Rich syndrome) I.y I - Interstitial/parenchymal lung disease
I.y - Progression, acceleration or exacerbation of preexisting ILD/fibrosis I.aa I - Interstitial/parenchymal lung disease
I.aa - Delayed ILD, -pneumonitis, -fibrosis I.ad I - Interstitial/parenchymal lung disease
I.ad - Radiation recall pneumonitis I.aj I - Interstitial/parenchymal lung disease
I.aj - Shrinking lung syndrome I.ax I - Interstitial/parenchymal lung disease
I.ax - Chronic pneumonitis II.b II - Pulmonary edema - Acute lung injury - ARDS
II.b - ARDS - Acute lung injury II.d II - Pulmonary edema - Acute lung injury - ARDS
II.d - Pulmonary edema, cardiogenic III.m III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.m - Coagulopathy IV.a IV - Airway involvement
IV.a - Bronchospasm - Wheezing - Asthma IV.c IV - Airway involvement
IV.c - Obliterative bronchiolitis (a pattern consistent with) (see also IVn, XVx) IV.n IV - Airway involvement
IV.n - Obstructive airway dysfunction (see also IVc, XVx) IV.y IV - Airway involvement
IV.y - Eosinophilic airway disease (asthma, bronchitis, bronchiolitis) V.a V - Pleural and/or pericardial involvement
V.a - Pleural effusion (uni- or bilateral) (can accompany DI-LDs) V.s V - Pleural and/or pericardial involvement
V.s - Serositis - Polyserositis VI.b VI - Pulmonary vasculopathies
VI.b - Pulmonary arterial hypertension VII.a VII - Mediastinal involvement
VII.a - Lymphadenopathy (intrathoracic) VIII.t VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.t - Vocal cord paresis/paralysis IX.a IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.a - Diaphragm/inspiratory muscle weakness/paralysis (w/wo ARF) IX.d IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.d - Respiratory failure from ventilatory depression (due to neuromuscular blockade/paralysis) IX.r IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.r - Myasthenia gravis - Myasthenic-like syndrome IX.ab IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.ab - Guillain-Barré (or GB-like) syndrome (w/wo ARF) IX.ac IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.ac - Myositis of the respiratory muscles (May lead to respiratory muscle paralysis) X.a X - Systemic/Distant conditions, syndromes and reactions
X.a - DRES syndrome - DRESS-like reaction X.c X - Systemic/Distant conditions, syndromes and reactions
X.c - Capillary leak syndrome (CLS) X.d X - Systemic/Distant conditions, syndromes and reactions
X.d - Lupus - Lupus syndrome (see also Vd) X.e X - Systemic/Distant conditions, syndromes and reactions
X.e - Autoimmunity-Autoimmune conditions (+ANA, +anti-ds-DNA, +ANCAs, other auto-Abs) X.f X - Systemic/Distant conditions, syndromes and reactions
X.f - Anaphylaxis-Anaphylactoid reaction (can be fatal) X.g X - Systemic/Distant conditions, syndromes and reactions
X.g - Hypersensitivity reaction (may manifest with fever and/or skin, throat or airway involvement) X.h X - Systemic/Distant conditions, syndromes and reactions
X.h - Eosinophilic granulomatosis with polyangiitis (Churg-Strauss) X.j X - Systemic/Distant conditions, syndromes and reactions
X.j - Myopathy-Myositis-Polymyositis (see also under Xba) X.k X - Systemic/Distant conditions, syndromes and reactions
X.k - Sarcoid-like granulomatosis (endo-/extrathoracic) X.m X - Systemic/Distant conditions, syndromes and reactions
X.m - Vascultis (pulmonary, extrathoracic or systemic)-ANCA status unknown or negative) X.s X - Systemic/Distant conditions, syndromes and reactions
X.s - Vasculitis, pulmonary (w/wo AH), extrapulmonary, systemic: ANCA-positive X.u X - Systemic/Distant conditions, syndromes and reactions
X.u - Multiple organ dysfunction/failure (MODS/MOF) X.am X - Systemic/Distant conditions, syndromes and reactions
X.am - Immune-related adverse effect/toxicity X.an X - Systemic/Distant conditions, syndromes and reactions
X.an - Cytokine release syndrome - Cytokine storm X.aw X - Systemic/Distant conditions, syndromes and reactions
X.aw - Connective tissue disease X.ay X - Systemic/Distant conditions, syndromes and reactions
X.ay - Polymyalgia rheumatica XI.n XI - Miscellaneous
XI.n - Neutropenia, agranulocytosis (w/wo infection/sepsis) XI.y XI - Miscellaneous
XI.y - Adrenal suppression XI.ag XI - Miscellaneous
XI.ag - Vertebral compression fracture XI.au XI - Miscellaneous
XI.au - Graft vs. host disease in transplant recipients XI.av XI - Miscellaneous
XI.av - Deterioration of graft function in SOT recipients XI.ba XI - Miscellaneous
XI.ba - Nonrespiratory AE of interest XII.a XII - Cardiovascular involvement / toxicity
XII.a - Left or biventricular dysfunction/failure XII.c XII - Cardiovascular involvement / toxicity
XII.c - Pericardial effusion (w/wo tamponade) XII.d XII - Cardiovascular involvement / toxicity
XII.d - Myocarditis (can be fulminant) XII.e XII - Cardiovascular involvement / toxicity
XII.e - Takotsubo (stress) cardiomyopathy XII.g XII - Cardiovascular involvement / toxicity
XII.g - Coronary artery disease (acute) - Myocardial ischemia/infarction XII.l XII - Cardiovascular involvement / toxicity
XII.l - Cardiac arrhythmias or dysrhythmias (AF, VT, VF, TdP) XII.n XII - Cardiovascular involvement / toxicity
XII.n - Cardiovascular collapse - Cardiogenic shock - Hypotension XII.s XII - Cardiovascular involvement / toxicity
XII.s - Heart block (bundle branch- or AV-) XII.ai XII - Cardiovascular involvement / toxicity
XII.ai - Cardiotoxicity XII.ax XII - Cardiovascular involvement / toxicity
XII.ax - Necrotizing myocarditis (w/o evidence for CAD) XII.ba XII - Cardiovascular involvement / toxicity
XII.ba - Sudden cardiac death XV.a XV - Pathology
XV.a - Path: NSIP-cellular pattern (see also Ia, Ib) XV.b XV - Pathology
XV.b - Path: Eosinophilic pneumonia (subacute or acute) (see also Ic) XV.c XV - Pathology
XV.c - Path: Organizing pneumonia (OP/BOOP) pattern (see also Id) XV.d XV - Pathology
XV.d - Path: Acute fibrinous organizing pneumonia (AFOP-pattern) (see also If) XV.e XV - Pathology
XV.e - Path: ILD with a granulomatous component (see also Im) XV.f XV - Pathology
XV.f - Path: Diffuse alveolar damage (DAD-pattern) (see also IL) XV.l XV - Pathology
XV.l - Path: Pulmonary fibrosis (not otherwise specified or unclassifiable) XV.v XV - Pathology
XV.v - Path: Micronodular organizing pneumonia/BOOP XV.x XV - Pathology
XV.x - Path: Acute/subacute bronchiolitis (see also IVc, IVi) XV.ba XV - Pathology
XV.ba - Path: Granulomatous lymphadenopathy XV.co XV - Pathology
XV.co - Path: Foamy inclusions in alveolar macrophages and/or in other lung cells XV.cp XV - Pathology
XV.cp - Path: Pneumocyte vacuolization XVI.k XVI - Imaging
XVI.k - Imaging: An area or areas of consolidation XVI.v XVI - Imaging
XVI.v - Imaging: Centrilobular micronodules (can be diffuse) XVI.bh XVI - Imaging
XVI.bh - Imaging: F18-PET scan positive lympadenopathy XVI.bt XVI - Imaging
XVI.bt - Imaging: A subsolid lung nodule or nodules XVII.b XVII - Infections & related conditions
XVII.b - Opportunistic pulmonary/systemic infections XVII.c XVII - Infections & related conditions
XVII.c - Aspergillosis, pulmonary (invasive, allergic [ABPA], or mycetoma) XVII.e XVII - Infections & related conditions
XVII.e - Pneumocystis jiroveci pneumonia XVII.g XVII - Infections & related conditions
XVII.g - Tuberculosis (pulmonary, pulmonary, extrapulmonary or disseminated). Reactivation or de novo XVII.q XVII - Infections & related conditions
XVII.q - Viral pneumonia XVII.r XVII - Infections & related conditions
XVII.r - Fungal infection (pulmonary/extrapulmonary) XIX.a XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.a - BAL: An excess proportion of lymphocytes XIX.b XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.b - BAL: An excess proportion of neutrophils XIX.c XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.c - BAL: An excess proportion of eosinophils

I.a I - Interstitial/parenchymal lung disease
I.a - Pneumonitis (ILD), acute and/or severe (may cause ARDS) I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.c I - Interstitial/parenchymal lung disease
I.c - Eosinophilic pneumonia (pulmonary infiltrates and eosinophilia) I.d I - Interstitial/parenchymal lung disease
I.d - Organizing pneumonia pattern (an area or areas of consolidation on imaging) I.h I - Interstitial/parenchymal lung disease
I.h - Subclinical pulmonary infiltrates/ILD II.b II - Pulmonary edema - Acute lung injury - ARDS
II.b - ARDS - Acute lung injury III.a III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.a - Alveolar hemorrhage (AH), diffuse AH (DAH) IV.d IV - Airway involvement
IV.d - Cough (lone) VI.a VI - Pulmonary vasculopathies
VI.a - Pulmonary embolism - Venous thrombosis/thromboembolism X.a X - Systemic/Distant conditions, syndromes and reactions
X.a - DRES syndrome - DRESS-like reaction X.n X - Systemic/Distant conditions, syndromes and reactions
X.n - Tumor lysis syndrome (TLS) XII.d XII - Cardiovascular involvement / toxicity
XII.d - Myocarditis (can be fulminant) XV.a XV - Pathology
XV.a - Path: NSIP-cellular pattern (see also Ia, Ib) XV.b XV - Pathology
XV.b - Path: Eosinophilic pneumonia (subacute or acute) (see also Ic) XV.c XV - Pathology
XV.c - Path: Organizing pneumonia (OP/BOOP) pattern (see also Id) XVII.j XVII - Infections & related conditions
XVII.j - Mucormycosis (pulmonary, tracheobronchial or systemic) XIX.a XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.a - BAL: An excess proportion of lymphocytes XIX.b XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.b - BAL: An excess proportion of neutrophils

I.c I - Interstitial/parenchymal lung disease
I.c - Eosinophilic pneumonia (pulmonary infiltrates and eosinophilia) I.t I - Interstitial/parenchymal lung disease
I.t - Pneumoconiosis (silicosis, talcosis...) IV.n IV - Airway involvement
IV.n - Obstructive airway dysfunction (see also IVc, XVx) V.f V - Pleural and/or pericardial involvement
V.f - Pneumothorax VI.b VI - Pulmonary vasculopathies
VI.b - Pulmonary arterial hypertension VI.g VI - Pulmonary vasculopathies
VI.g - Foreign body pulmonary vasculopathy (Excipient lung disease) IX.k IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.k - Trismus (lockjaw) X.m X - Systemic/Distant conditions, syndromes and reactions
X.m - Vascultis (pulmonary, extrathoracic or systemic)-ANCA status unknown or negative) X.bb X - Systemic/Distant conditions, syndromes and reactions
X.bb - Foreign body (talc, cornstarch) retinopathy XI.b XI - Miscellaneous
XI.b - Chest pain (acute or subacute), lone or prominent XI.m XI - Miscellaneous
XI.m - Pulmonary emphysema - Lung cysts or bullae XII.g XII - Cardiovascular involvement / toxicity
XII.g - Coronary artery disease (acute) - Myocardial ischemia/infarction XV.b XV - Pathology
XV.b - Path: Eosinophilic pneumonia (subacute or acute) (see also Ic) XV.q XV - Pathology
XV.q - Path: Foreign body deposits/granulomatous reaction

I.a I - Interstitial/parenchymal lung disease
I.a - Pneumonitis (ILD), acute and/or severe (may cause ARDS) I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.c I - Interstitial/parenchymal lung disease
I.c - Eosinophilic pneumonia (pulmonary infiltrates and eosinophilia) I.d I - Interstitial/parenchymal lung disease
I.d - Organizing pneumonia pattern (an area or areas of consolidation on imaging) I.e I - Interstitial/parenchymal lung disease
I.e - Acute eosinophilic pneumonia (AEP) I.m I - Interstitial/parenchymal lung disease
I.m - ILD with a granulomatous component II.d II - Pulmonary edema - Acute lung injury - ARDS
II.d - Pulmonary edema, cardiogenic IV.c IV - Airway involvement
IV.c - Obliterative bronchiolitis (a pattern consistent with) (see also IVn, XVx) IV.j IV - Airway involvement
IV.j - Bronchiolitis (a clinical-imaging pattern suggestive of) IV.k IV - Airway involvement
IV.k - Bronchiectasis IV.ad IV - Airway involvement
IV.ad - Large airway inflammation - Tracheitis (w/wo tissue eosinophilia) V.a V - Pleural and/or pericardial involvement
V.a - Pleural effusion (uni- or bilateral) (can accompany DI-LDs) V.b V - Pleural and/or pericardial involvement
V.b - Eosinophilic pleural effusion V.m V - Pleural and/or pericardial involvement
V.m - Pleuropericarditis - Pleuropericardial effusion (ANA unknown or negative) X.a X - Systemic/Distant conditions, syndromes and reactions
X.a - DRES syndrome - DRESS-like reaction X.d X - Systemic/Distant conditions, syndromes and reactions
X.d - Lupus - Lupus syndrome (see also Vd) XI.b XI - Miscellaneous
XI.b - Chest pain (acute or subacute), lone or prominent XII.a XII - Cardiovascular involvement / toxicity
XII.a - Left or biventricular dysfunction/failure XII.c XII - Cardiovascular involvement / toxicity
XII.c - Pericardial effusion (w/wo tamponade) XII.d XII - Cardiovascular involvement / toxicity
XII.d - Myocarditis (can be fulminant) XII.g XII - Cardiovascular involvement / toxicity
XII.g - Coronary artery disease (acute) - Myocardial ischemia/infarction XII.h XII - Cardiovascular involvement / toxicity
XII.h - Eosinophilic myocarditis XII.n XII - Cardiovascular involvement / toxicity
XII.n - Cardiovascular collapse - Cardiogenic shock - Hypotension XII.q XII - Cardiovascular involvement / toxicity
XII.q - Pericarditis (see also under XIIc) XII.bf XII - Cardiovascular involvement / toxicity
XII.bf - Myopericarditis (see under XIIc/d/g) XV.a XV - Pathology
XV.a - Path: NSIP-cellular pattern (see also Ia, Ib) XV.b XV - Pathology
XV.b - Path: Eosinophilic pneumonia (subacute or acute) (see also Ic) XV.c XV - Pathology
XV.c - Path: Organizing pneumonia (OP/BOOP) pattern (see also Id) XV.e XV - Pathology
XV.e - Path: ILD with a granulomatous component (see also Im) XV.z XV - Pathology
XV.z - Path: Obliterative (constrictive) bronchiolitis (see also IVc, IVn) XVI.b XVI - Imaging
XVI.b - Imaging: Ground-glass opacities (GGO) / shadowing XVI.k XVI - Imaging
XVI.k - Imaging: An area or areas of consolidation XVI.ay XVI - Imaging
XVI.ay - Imaging: Asymmetrical, predominantly unilateral involvement XIX.a XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.a - BAL: An excess proportion of lymphocytes XIX.c XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.c - BAL: An excess proportion of eosinophils

I.a I - Interstitial/parenchymal lung disease
I.a - Pneumonitis (ILD), acute and/or severe (may cause ARDS) I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.c I - Interstitial/parenchymal lung disease
I.c - Eosinophilic pneumonia (pulmonary infiltrates and eosinophilia) I.d I - Interstitial/parenchymal lung disease
I.d - Organizing pneumonia pattern (an area or areas of consolidation on imaging) I.e I - Interstitial/parenchymal lung disease
I.e - Acute eosinophilic pneumonia (AEP) I.k I - Interstitial/parenchymal lung disease
I.k - Lung nodule or nodules I.l I - Interstitial/parenchymal lung disease
I.l - Diffuse alveolar damage (DAD) (see alsoo under IIb and XVf) I.aj I - Interstitial/parenchymal lung disease
I.aj - Shrinking lung syndrome II.a II - Pulmonary edema - Acute lung injury - ARDS
II.a - Pulmonary edema, noncardiogenic (NCPE) II.b II - Pulmonary edema - Acute lung injury - ARDS
II.b - ARDS - Acute lung injury IV.d IV - Airway involvement
IV.d - Cough (lone) V.d V - Pleural and/or pericardial involvement
V.d - Pleural/pericardial effusion, ANA positive (DI lupus) V.m V - Pleural and/or pericardial involvement
V.m - Pleuropericarditis - Pleuropericardial effusion (ANA unknown or negative) VII.a VII - Mediastinal involvement
VII.a - Lymphadenopathy (intrathoracic) X.a X - Systemic/Distant conditions, syndromes and reactions
X.a - DRES syndrome - DRESS-like reaction X.b X - Systemic/Distant conditions, syndromes and reactions
X.b - Antiphospholipid antibodies w/wo the APL syndrome X.d X - Systemic/Distant conditions, syndromes and reactions
X.d - Lupus - Lupus syndrome (see also Vd) X.e X - Systemic/Distant conditions, syndromes and reactions
X.e - Autoimmunity-Autoimmune conditions (+ANA, +anti-ds-DNA, +ANCAs, other auto-Abs) X.f X - Systemic/Distant conditions, syndromes and reactions
X.f - Anaphylaxis-Anaphylactoid reaction (can be fatal) X.g X - Systemic/Distant conditions, syndromes and reactions
X.g - Hypersensitivity reaction (may manifest with fever and/or skin, throat or airway involvement) X.m X - Systemic/Distant conditions, syndromes and reactions
X.m - Vascultis (pulmonary, extrathoracic or systemic)-ANCA status unknown or negative) X.o X - Systemic/Distant conditions, syndromes and reactions
X.o - Neutrophilic dermatosis (Pyoderma, Sweet syndrome) X.s X - Systemic/Distant conditions, syndromes and reactions
X.s - Vasculitis, pulmonary (w/wo AH), extrapulmonary, systemic: ANCA-positive X.v X - Systemic/Distant conditions, syndromes and reactions
X.v - Systemic eosinophilic syndrome w/wo vasculitis (see also Xa) X.aj X - Systemic/Distant conditions, syndromes and reactions
X.aj - Polyarteritis nodosa-like condition XI.b XI - Miscellaneous
XI.b - Chest pain (acute or subacute), lone or prominent XI.c XI - Miscellaneous
XI.c - Pleuritic chest pain XII.c XII - Cardiovascular involvement / toxicity
XII.c - Pericardial effusion (w/wo tamponade) XII.d XII - Cardiovascular involvement / toxicity
XII.d - Myocarditis (can be fulminant) XII.as XII - Cardiovascular involvement / toxicity
XII.as - Giant cell myocarditis XV.b XV - Pathology
XV.b - Path: Eosinophilic pneumonia (subacute or acute) (see also Ic) XV.d XV - Pathology
XV.d - Path: Acute fibrinous organizing pneumonia (AFOP-pattern) (see also If) XV.ac XV - Pathology
XV.ac - Path: Pulmonary vasculitis other than capillaritis XV.ad XV - Pathology
XV.ad - Path: Eosinophilic vasculitis XV.af XV - Pathology
XV.af - Path: Granulomatous pulmonary vasculitis XV.cj XV - Pathology
XV.cj - Path: Brownish macrophages in airspaces (airways - alveoli) XVI.e XVI - Imaging
XVI.e - Imaging: Pulmonary opacities with a subpleural distribution XIX.b XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.b - BAL: An excess proportion of neutrophils XIX.c XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.c - BAL: An excess proportion of eosinophils

I.c I - Interstitial/parenchymal lung disease
I.c - Eosinophilic pneumonia (pulmonary infiltrates and eosinophilia) IV.d IV - Airway involvement
IV.d - Cough (lone) XV.b XV - Pathology
XV.b - Path: Eosinophilic pneumonia (subacute or acute) (see also Ic) XV.ac XV - Pathology
XV.ac - Path: Pulmonary vasculitis other than capillaritis XV.af XV - Pathology
XV.af - Path: Granulomatous pulmonary vasculitis XVI.e XVI - Imaging
XVI.e - Imaging: Pulmonary opacities with a subpleural distribution

I.c I - Interstitial/parenchymal lung disease
I.c - Eosinophilic pneumonia (pulmonary infiltrates and eosinophilia) I.e I - Interstitial/parenchymal lung disease
I.e - Acute eosinophilic pneumonia (AEP) XV.b XV - Pathology
XV.b - Path: Eosinophilic pneumonia (subacute or acute) (see also Ic)

I.a I - Interstitial/parenchymal lung disease
I.a - Pneumonitis (ILD), acute and/or severe (may cause ARDS) I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.c I - Interstitial/parenchymal lung disease
I.c - Eosinophilic pneumonia (pulmonary infiltrates and eosinophilia) I.d I - Interstitial/parenchymal lung disease
I.d - Organizing pneumonia pattern (an area or areas of consolidation on imaging) I.e I - Interstitial/parenchymal lung disease
I.e - Acute eosinophilic pneumonia (AEP) I.g I - Interstitial/parenchymal lung disease
I.g - Pulmonary fibrosis I.l I - Interstitial/parenchymal lung disease
I.l - Diffuse alveolar damage (DAD) (see alsoo under IIb and XVf) I.r I - Interstitial/parenchymal lung disease
I.r - An imaging pattern consistent with DIP I.v I - Interstitial/parenchymal lung disease
I.v - Abnormal lung function/pulmonary physiology (PFTs) without necessarily imaging or clinical evidence I.ax I - Interstitial/parenchymal lung disease
I.ax - Chronic pneumonitis II.a II - Pulmonary edema - Acute lung injury - ARDS
II.a - Pulmonary edema, noncardiogenic (NCPE) II.b II - Pulmonary edema - Acute lung injury - ARDS
II.b - ARDS - Acute lung injury II.j II - Pulmonary edema - Acute lung injury - ARDS
II.j - Transient pulmonary opacities/infiltrates (see also under Iav) III.a III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.a - Alveolar hemorrhage (AH), diffuse AH (DAH) IV.a IV - Airway involvement
IV.a - Bronchospasm - Wheezing - Asthma IV.ae IV - Airway involvement
IV.ae - Tracheobronchitis-like clinical pattern V.a V - Pleural and/or pericardial involvement
V.a - Pleural effusion (uni- or bilateral) (can accompany DI-LDs) V.b V - Pleural and/or pericardial involvement
V.b - Eosinophilic pleural effusion V.d V - Pleural and/or pericardial involvement
V.d - Pleural/pericardial effusion, ANA positive (DI lupus) V.i V - Pleural and/or pericardial involvement
V.i - Pleuritis (can cause chest pain) VI.d VI - Pulmonary vasculopathies
VI.d - Pulmonary vasculitis or capillaritis VII.a VII - Mediastinal involvement
VII.a - Lymphadenopathy (intrathoracic) VIII.b VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.b - Hematoma of/around central airway wall potentially causing UAO IX.i IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.i - Respiratory arrest - Apnea X.a X - Systemic/Distant conditions, syndromes and reactions
X.a - DRES syndrome - DRESS-like reaction X.d X - Systemic/Distant conditions, syndromes and reactions
X.d - Lupus - Lupus syndrome (see also Vd) X.e X - Systemic/Distant conditions, syndromes and reactions
X.e - Autoimmunity-Autoimmune conditions (+ANA, +anti-ds-DNA, +ANCAs, other auto-Abs) X.f X - Systemic/Distant conditions, syndromes and reactions
X.f - Anaphylaxis-Anaphylactoid reaction (can be fatal) X.s X - Systemic/Distant conditions, syndromes and reactions
X.s - Vasculitis, pulmonary (w/wo AH), extrapulmonary, systemic: ANCA-positive XI.b XI - Miscellaneous
XI.b - Chest pain (acute or subacute), lone or prominent XI.c XI - Miscellaneous
XI.c - Pleuritic chest pain XV.a XV - Pathology
XV.a - Path: NSIP-cellular pattern (see also Ia, Ib) XV.b XV - Pathology
XV.b - Path: Eosinophilic pneumonia (subacute or acute) (see also Ic) XV.c XV - Pathology
XV.c - Path: Organizing pneumonia (OP/BOOP) pattern (see also Id) XV.e XV - Pathology
XV.e - Path: ILD with a granulomatous component (see also Im) XV.f XV - Pathology
XV.f - Path: Diffuse alveolar damage (DAD-pattern) (see also IL) XV.h XV - Pathology
XV.h - Path: NSIP-fibrotic pattern XV.j XV - Pathology
XV.j - Path: Pulmonary fibrosis (UIP-pattern) XV.k XV - Pathology
XV.k - Path: Desquamative interstitial pneumonia (DIP-pattern) XV.x XV - Pathology
XV.x - Path: Acute/subacute bronchiolitis (see also IVc, IVi) XV.ac XV - Pathology
XV.ac - Path: Pulmonary vasculitis other than capillaritis XV.af XV - Pathology
XV.af - Path: Granulomatous pulmonary vasculitis XV.bi XV - Pathology
XV.bi - Path: Giant-cell interstitial pneumonia (GIP)-pattern XV.bl XV - Pathology
XV.bl - Path: Resolving alveolar damage XVI.b XVI - Imaging
XVI.b - Imaging: Ground-glass opacities (GGO) / shadowing XVI.f XVI - Imaging
XVI.f - Imaging: Bibasilar opacities/shadowing XVI.l XVI - Imaging
XVI.l - Imaging: Peribronchovascular areas of consolidation XVI.bc XVI - Imaging
XVI.bc - Imaging: Intrathoracic lymph node enlargement XVI.bp XVI - Imaging
XVI.bp - Imaging: Reverse ventilation-perfusion mismatch

I.a I - Interstitial/parenchymal lung disease
I.a - Pneumonitis (ILD), acute and/or severe (may cause ARDS) I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.c I - Interstitial/parenchymal lung disease
I.c - Eosinophilic pneumonia (pulmonary infiltrates and eosinophilia) I.h I - Interstitial/parenchymal lung disease
I.h - Subclinical pulmonary infiltrates/ILD I.ad I - Interstitial/parenchymal lung disease
I.ad - Radiation recall pneumonitis I.av I - Interstitial/parenchymal lung disease
I.av - Transient pulmonary opacities/infiltrates (TAPO) (see also under IIj) I.az I - Interstitial/parenchymal lung disease
I.az - Pulmonary alveolar proteinosis flare/exacerbation III.a III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.a - Alveolar hemorrhage (AH), diffuse AH (DAH) XII.l XII - Cardiovascular involvement / toxicity
XII.l - Cardiac arrhythmias or dysrhythmias (AF, VT, VF, TdP) XII.p XII - Cardiovascular involvement / toxicity
XII.p - QTc prolongation XII.r XII - Cardiovascular involvement / toxicity
XII.r - Heart failure (biventricular, congestive) XII.ai XII - Cardiovascular involvement / toxicity
XII.ai - Cardiotoxicity XV.a XV - Pathology
XV.a - Path: NSIP-cellular pattern (see also Ia, Ib) XV.b XV - Pathology
XV.b - Path: Eosinophilic pneumonia (subacute or acute) (see also Ic) XIX.a XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.a - BAL: An excess proportion of lymphocytes XIX.c XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.c - BAL: An excess proportion of eosinophils XXI.e XXI - Rechallenge data
XXI.e - Rechallenge may not necessarily lead to relapse of AE/ILD

I.a I - Interstitial/parenchymal lung disease
I.a - Pneumonitis (ILD), acute and/or severe (may cause ARDS) I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) II.b II - Pulmonary edema - Acute lung injury - ARDS
II.b - ARDS - Acute lung injury IV.d IV - Airway involvement
IV.d - Cough (lone) XII.ai XII - Cardiovascular involvement / toxicity
XII.ai - Cardiotoxicity XV.a XV - Pathology
XV.a - Path: NSIP-cellular pattern (see also Ia, Ib) XV.b XV - Pathology
XV.b - Path: Eosinophilic pneumonia (subacute or acute) (see also Ic) XV.c XV - Pathology
XV.c - Path: Organizing pneumonia (OP/BOOP) pattern (see also Id) XV.e XV - Pathology
XV.e - Path: ILD with a granulomatous component (see also Im)

I.a I - Interstitial/parenchymal lung disease
I.a - Pneumonitis (ILD), acute and/or severe (may cause ARDS) I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.d I - Interstitial/parenchymal lung disease
I.d - Organizing pneumonia pattern (an area or areas of consolidation on imaging) I.f I - Interstitial/parenchymal lung disease
I.f - Acute fibrinous organizing pneumonia (AFOP) I.m I - Interstitial/parenchymal lung disease
I.m - ILD with a granulomatous component I.o I - Interstitial/parenchymal lung disease
I.o - Focal/localized area of pneumonitis/fibrosis I.y I - Interstitial/parenchymal lung disease
I.y - Progression, acceleration or exacerbation of preexisting ILD/fibrosis I.ad I - Interstitial/parenchymal lung disease
I.ad - Radiation recall pneumonitis II.b II - Pulmonary edema - Acute lung injury - ARDS
II.b - ARDS - Acute lung injury III.h III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.h - Major/massive hemoptysis III.l III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.l - Alveolar hemorrhage, localized (e.g. lobar) IV.d IV - Airway involvement
IV.d - Cough (lone) IV.j IV - Airway involvement
IV.j - Bronchiolitis (a clinical-imaging pattern suggestive of) IV.k IV - Airway involvement
IV.k - Bronchiectasis IV.n IV - Airway involvement
IV.n - Obstructive airway dysfunction (see also IVc, XVx) IV.t IV - Airway involvement
IV.t - Sptutum production - Bronchorrhea - 'Bronchitis' IV.y IV - Airway involvement
IV.y - Eosinophilic airway disease (asthma, bronchitis, bronchiolitis) IV.ac IV - Airway involvement
IV.ac - Exacerbation or deterioration of preexisting asthma IV.ad IV - Airway involvement
IV.ad - Large airway inflammation - Tracheitis (w/wo tissue eosinophilia) V.m V - Pleural and/or pericardial involvement
V.m - Pleuropericarditis - Pleuropericardial effusion (ANA unknown or negative) VI.a VI - Pulmonary vasculopathies
VI.a - Pulmonary embolism - Venous thrombosis/thromboembolism VI.b VI - Pulmonary vasculopathies
VI.b - Pulmonary arterial hypertension VII.a VII - Mediastinal involvement
VII.a - Lymphadenopathy (intrathoracic) VII.e VII - Mediastinal involvement
VII.e - Granulomatous mediastinal lymphadenopathy VIII.q VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.q - Tongue involvement (edema, glossitis, hematoma) VIII.t VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.t - Vocal cord paresis/paralysis IX.r IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.r - Myasthenia gravis - Myasthenic-like syndrome X.b X - Systemic/Distant conditions, syndromes and reactions
X.b - Antiphospholipid antibodies w/wo the APL syndrome X.c X - Systemic/Distant conditions, syndromes and reactions
X.c - Capillary leak syndrome (CLS) X.d X - Systemic/Distant conditions, syndromes and reactions
X.d - Lupus - Lupus syndrome (see also Vd) X.f X - Systemic/Distant conditions, syndromes and reactions
X.f - Anaphylaxis-Anaphylactoid reaction (can be fatal) X.g X - Systemic/Distant conditions, syndromes and reactions
X.g - Hypersensitivity reaction (may manifest with fever and/or skin, throat or airway involvement) X.j X - Systemic/Distant conditions, syndromes and reactions
X.j - Myopathy-Myositis-Polymyositis (see also under Xba) X.k X - Systemic/Distant conditions, syndromes and reactions
X.k - Sarcoid-like granulomatosis (endo-/extrathoracic) X.m X - Systemic/Distant conditions, syndromes and reactions
X.m - Vascultis (pulmonary, extrathoracic or systemic)-ANCA status unknown or negative) X.s X - Systemic/Distant conditions, syndromes and reactions
X.s - Vasculitis, pulmonary (w/wo AH), extrapulmonary, systemic: ANCA-positive X.ah X - Systemic/Distant conditions, syndromes and reactions
X.ah - Granulomatosis with polyangiitis (typically ANCA pos.) - GPA flare X.an X - Systemic/Distant conditions, syndromes and reactions
X.an - Cytokine release syndrome - Cytokine storm X.aw X - Systemic/Distant conditions, syndromes and reactions
X.aw - Connective tissue disease X.ax X - Systemic/Distant conditions, syndromes and reactions
X.ax - Scleroderma X.ay X - Systemic/Distant conditions, syndromes and reactions
X.ay - Polymyalgia rheumatica XI.d XI - Miscellaneous
XI.d - Metabolic acidosis (incl. lactic acidosis/-gap). May cause hyperpnea/dyspnea XI.n XI - Miscellaneous
XI.n - Neutropenia, agranulocytosis (w/wo infection/sepsis) XII.a XII - Cardiovascular involvement / toxicity
XII.a - Left or biventricular dysfunction/failure XII.c XII - Cardiovascular involvement / toxicity
XII.c - Pericardial effusion (w/wo tamponade) XII.d XII - Cardiovascular involvement / toxicity
XII.d - Myocarditis (can be fulminant) XII.s XII - Cardiovascular involvement / toxicity
XII.s - Heart block (bundle branch- or AV-) XV.a XV - Pathology
XV.a - Path: NSIP-cellular pattern (see also Ia, Ib) XV.b XV - Pathology
XV.b - Path: Eosinophilic pneumonia (subacute or acute) (see also Ic) XV.c XV - Pathology
XV.c - Path: Organizing pneumonia (OP/BOOP) pattern (see also Id) XV.d XV - Pathology
XV.d - Path: Acute fibrinous organizing pneumonia (AFOP-pattern) (see also If) XV.e XV - Pathology
XV.e - Path: ILD with a granulomatous component (see also Im) XV.f XV - Pathology
XV.f - Path: Diffuse alveolar damage (DAD-pattern) (see also IL) XV.x XV - Pathology
XV.x - Path: Acute/subacute bronchiolitis (see also IVc, IVi) XV.bb XV - Pathology
XV.bb - Path: Airway inflammation XV.cw XV - Pathology
XV.cw - Path: Myocardial vasculitis XVI.b XVI - Imaging
XVI.b - Imaging: Ground-glass opacities (GGO) / shadowing XVI.e XVI - Imaging
XVI.e - Imaging: Pulmonary opacities with a subpleural distribution XVI.k XVI - Imaging
XVI.k - Imaging: An area or areas of consolidation XVI.v XVI - Imaging
XVI.v - Imaging: Centrilobular micronodules (can be diffuse) XVI.z XVI - Imaging
XVI.z - Imaging: A large nodule or a mass XVI.ai XVI - Imaging
XVI.ai - Imaging: A 'tree-in-bud' pattern XVII.c XVII - Infections & related conditions
XVII.c - Aspergillosis, pulmonary (invasive, allergic [ABPA], or mycetoma) XVII.g XVII - Infections & related conditions
XVII.g - Tuberculosis (pulmonary, pulmonary, extrapulmonary or disseminated). Reactivation or de novo XVII.o XVII - Infections & related conditions
XVII.o - Nocardia pulmonary/systemic infection XIX.a XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.a - BAL: An excess proportion of lymphocytes XIX.b XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.b - BAL: An excess proportion of neutrophils