I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) IV.c IV - Airway involvement
IV.c - Obliterative bronchiolitis (a pattern consistent with) (see also IVn, XVx) V.a V - Pleural and/or pericardial involvement
V.a - Pleural effusion (uni- or bilateral) (can accompany DI-LDs) X.j X - Systemic/Distant conditions, syndromes and reactions
X.j - Myopathy-Myositis-Polymyositis (see also under Xba) XII.p XII - Cardiovascular involvement / toxicity
XII.p - QTc prolongation 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

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) XV.x XV - Pathology
XV.x - Path: Acute/subacute bronchiolitis (see also IVc, IVi) XV.z XV - Pathology
XV.z - Path: Obliterative (constrictive) bronchiolitis (see also IVc, IVn) XV.cv XV - Pathology
XV.cv - Path: Peribronchiolar granulomas

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) 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 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) X.f X - Systemic/Distant conditions, syndromes and reactions
X.f - Anaphylaxis-Anaphylactoid reaction (can be fatal) XI.b XI - Miscellaneous
XI.b - Chest pain (acute or subacute), lone or prominent XI.ap XI - Miscellaneous
XI.ap - Halitosis - Breath malodor 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.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.m XII - Cardiovascular involvement / toxicity
XII.m - Cardiac- cardiorespiratory/pulmonary arrest XII.w XII - Cardiovascular involvement / toxicity
XII.w - Asystole XII.af XII - Cardiovascular involvement / toxicity
XII.af - Coronary vasospasm - Vasospastic angina XII.ai XII - Cardiovascular involvement / toxicity
XII.ai - Cardiotoxicity XV.z XV - Pathology
XV.z - Path: Obliterative (constrictive) bronchiolitis (see also IVc, IVn)

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.m I - Interstitial/parenchymal lung disease
I.m - ILD with a granulomatous component 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.q II - Pulmonary edema - Acute lung injury - ARDS
II.q - Respiratory distress or failure, not otherwise specified III.a III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.a - Alveolar hemorrhage (AH), diffuse AH (DAH) IV.c IV - Airway involvement
IV.c - Obliterative bronchiolitis (a pattern consistent with) (see also IVn, XVx) V.u V - Pleural and/or pericardial involvement
V.u - Eosinophilic pleuritis VI.a VI - Pulmonary vasculopathies
VI.a - Pulmonary embolism - Venous thrombosis/thromboembolism VI.b VI - Pulmonary vasculopathies
VI.b - Pulmonary arterial hypertension 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.w VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.w - Uvulitis, uvular edema 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) X.f X - Systemic/Distant conditions, syndromes and reactions
X.f - Anaphylaxis-Anaphylactoid reaction (can be fatal) X.u X - Systemic/Distant conditions, syndromes and reactions
X.u - Multiple organ dysfunction/failure (MODS/MOF) X.w X - Systemic/Distant conditions, syndromes and reactions
X.w - Eosinophilia myalgia syndrome (EMS) XI.b XI - Miscellaneous
XI.b - Chest pain (acute or subacute), lone or prominent XI.h XI - Miscellaneous
XI.h - Esophageal pathology (erosion, ulcer, tear, rupture, fistula) XI.r XI - Miscellaneous
XI.r - Death following exposure or poisoning XI.bi XI - Miscellaneous
XI.bi - Cyanide poisoning XII.d XII - Cardiovascular involvement / toxicity
XII.d - Myocarditis (can be fulminant) 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.n XII - Cardiovascular involvement / toxicity
XII.n - Cardiovascular collapse - Cardiogenic shock - Hypotension XII.r XII - Cardiovascular involvement / toxicity
XII.r - Heart failure (biventricular, congestive) XII.w XII - Cardiovascular involvement / toxicity
XII.w - Asystole XII.ag XII - Cardiovascular involvement / toxicity
XII.ag - Bradycardia XII.ah XII - Cardiovascular involvement / toxicity
XII.ah - Tachycardia XII.ai XII - Cardiovascular involvement / toxicity
XII.ai - Cardiotoxicity XV.c XV - Pathology
XV.c - Path: Organizing pneumonia (OP/BOOP) pattern (see also Id) XV.f XV - Pathology
XV.f - Path: Diffuse alveolar damage (DAD-pattern) (see also IL) XV.z XV - Pathology
XV.z - Path: Obliterative (constrictive) bronchiolitis (see also IVc, IVn) XIX.d XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.d - BAL: Gross or microscopic bleeding/hemorrhage XXIV.i XXIV - Veterinary medicine
XXIV.i - Veterinary: Respiratory/Ventilatory depression XXIV.j XXIV - Veterinary medicine
XXIV.j - Veterinary: Cardiotoxicity

II.b II - Pulmonary edema - Acute lung injury - ARDS
II.b - ARDS - Acute lung injury IX.d IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.d - Respiratory failure from ventilatory depression (due to neuromuscular blockade/paralysis) XI.d XI - Miscellaneous
XI.d - Metabolic acidosis (incl. lactic acidosis/-gap). May cause hyperpnea/dyspnea XII.n XII - Cardiovascular involvement / toxicity
XII.n - Cardiovascular collapse - Cardiogenic shock - Hypotension XII.ai XII - Cardiovascular involvement / toxicity
XII.ai - Cardiotoxicity XV.g XV - Pathology
XV.g - Path: Alveolar hemorrhage (see also IIIa) XV.z XV - Pathology
XV.z - Path: Obliterative (constrictive) bronchiolitis (see also IVc, IVn)

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.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 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.d III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.d - Alveolar hemorrhage, diffuse (ANCA-positive/-related) 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) V.a V - Pleural and/or pericardial involvement
V.a - Pleural effusion (uni- or bilateral) (can accompany DI-LDs) IX.a IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.a - Diaphragm/inspiratory muscle weakness/paralysis (w/wo ARF) IX.r IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.r - Myasthenia gravis - Myasthenic-like 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.j X - Systemic/Distant conditions, syndromes and reactions
X.j - Myopathy-Myositis-Polymyositis (see also under Xba) X.s X - Systemic/Distant conditions, syndromes and reactions
X.s - Vasculitis, pulmonary (w/wo AH), extrapulmonary, systemic: ANCA-positive X.ac X - Systemic/Distant conditions, syndromes and reactions
X.ac - Anti-GBM antibody disease (Goodpasture-like or flare of preexisting GS) XI.t XI - Miscellaneous
XI.t - Yellow nail syndrome XV.z XV - Pathology
XV.z - Path: Obliterative (constrictive) bronchiolitis (see also IVc, IVn) XVII.w XVII - Infections & related conditions
XVII.w - Hypogammaglobulinemia - Antibody deficiency

IV.c IV - Airway involvement
IV.c - Obliterative bronchiolitis (a pattern consistent with) (see also IVn, XVx) IV.k IV - Airway involvement
IV.k - Bronchiectasis IV.n IV - Airway involvement
IV.n - Obstructive airway dysfunction (see also IVc, XVx) XII.t XII - Cardiovascular involvement / toxicity
XII.t - Torsades de pointe XV.z XV - Pathology
XV.z - Path: Obliterative (constrictive) bronchiolitis (see also IVc, IVn) XV.bb XV - Pathology
XV.bb - Path: Airway inflammation XV.bd XV - Pathology
XV.bd - Path: Bronchiolar necrosis & vasculitis

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) 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.j I - Interstitial/parenchymal lung disease
I.j - Exogenous lipoid pneumonia (subacute, acute) I.r I - Interstitial/parenchymal lung disease
I.r - An imaging pattern consistent with DIP I.ai I - Interstitial/parenchymal lung disease
I.ai - Combined pulmonary fibrosis and emphysema syndrome (CPFE) IV.a IV - Airway involvement
IV.a - Bronchospasm - Wheezing - Asthma IV.d IV - Airway involvement
IV.d - Cough (lone) IV.g IV - Airway involvement
IV.g - Cough syncope IV.n IV - Airway involvement
IV.n - Obstructive airway dysfunction (see also IVc, XVx) IV.u IV - Airway involvement
IV.u - Endobronchial (eosinophilic) nodules on bronchoscopy IV.ad IV - Airway involvement
IV.ad - Large airway inflammation - Tracheitis (w/wo tissue eosinophilia) IX.q IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.q - Obstructive sleep apnea X.m X - Systemic/Distant conditions, syndromes and reactions
X.m - Vascultis (pulmonary, extrathoracic or systemic)-ANCA status unknown or negative) 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.ah X - Systemic/Distant conditions, syndromes and reactions
X.ah - Granulomatosis with polyangiitis (typically ANCA pos.) - GPA flare XI.m XI - Miscellaneous
XI.m - Pulmonary emphysema - Lung cysts or bullae XI.ag XI - Miscellaneous
XI.ag - Vertebral compression fracture XI.ah XI - Miscellaneous
XI.ah - Fainting XI.an XI - Miscellaneous
XI.an - Disrupted lung surfactant function XIII.a XIII - Neoplastic conditions
XIII.a - Lung cancer XIV.c XIV - Hemoglobinopathies - Abnormal hemoglobin states (acquired)
XIV.c - Carboxyhemoglobinemia XV.k XV - Pathology
XV.k - Path: Desquamative interstitial pneumonia (DIP-pattern) XV.y XV - Pathology
XV.y - Path: Respiratory bronchiolitis (w/wo the RB-ILD-pattern) XV.z XV - Pathology
XV.z - Path: Obliterative (constrictive) bronchiolitis (see also IVc, IVn) XV.ay XV - Pathology
XV.ay - Path: Smoking-related interstitial fibrosis (SRIF). Respiratory bronchiolitis with fibrosis XV.bw XV - Pathology
XV.bw - Path: Airspace enlargement with fibrosis XVI.g XVI - Imaging
XVI.g - Imaging: Diffuse whiteout/alveolar shadowing (see also under IIb-ARDS) XVI.p XVI - Imaging
XVI.p - Imaging: Small irregular opacities - ILA - Diffuse reticulation - 'Dirty lung' XVI.ac XVI - Imaging
XVI.ac - Imaging: A generalized increase in lung density XVII.a XVII - Infections & related conditions
XVII.a - Respiratory tract infection incl. pneumonia