I.an I - Interstitial/parenchymal lung disease
I.an - Hypersensitivity pneumonitis pattern

I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.an I - Interstitial/parenchymal lung disease
I.an - Hypersensitivity pneumonitis pattern IV.a IV - Airway involvement
IV.a - Bronchospasm - Wheezing - Asthma

I.a I - Interstitial/parenchymal lung disease
I.a - Pneumonitis (ILD), acute and/or severe (may cause ARDS) 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.j I - Interstitial/parenchymal lung disease
I.j - Exogenous lipoid pneumonia (subacute, acute) I.n I - Interstitial/parenchymal lung disease
I.n - Pulmonary alveolar proteinosis (PAP) I.t I - Interstitial/parenchymal lung disease
I.t - Pneumoconiosis (silicosis, talcosis...) I.an I - Interstitial/parenchymal lung disease
I.an - Hypersensitivity pneumonitis pattern I.ao I - Interstitial/parenchymal lung disease
I.ao - Pulmonary infiltrates 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.c III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.c - Hemoptysis IV.d IV - Airway involvement
IV.d - Cough (lone) V.f V - Pleural and/or pericardial involvement
V.f - Pneumothorax V.ab V - Pleural and/or pericardial involvement
V.ab - Pneumothorax, bilateral VII.h VII - Mediastinal involvement
VII.h - Pneumomediastinum VIII.w VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.w - Uvulitis, uvular edema 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.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.m XI - Miscellaneous
XI.m - Pulmonary emphysema - Lung cysts or bullae XI.s XI - Miscellaneous
XI.s - Sniffing death - Death from inhalation of compound XI.av XI - Miscellaneous
XI.av - Deterioration of graft function in SOT recipients 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.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-) XII.w XII - Cardiovascular involvement / toxicity
XII.w - Asystole XII.af XII - Cardiovascular involvement / toxicity
XII.af - Coronary vasospasm - Vasospastic angina XII.ap XII - Cardiovascular involvement / toxicity
XII.ap - Coronary artery dissection XIII.a XIII - Neoplastic conditions
XIII.a - Lung cancer XV.k XV - Pathology
XV.k - Path: Desquamative interstitial pneumonia (DIP-pattern) XV.n XV - Pathology
XV.n - Path: Pulmonary alveolar proteinosis pattern (PAP pattern) XV.p XV - Pathology
XV.p - Path: Exogenous lipoid pneumonia XV.q XV - Pathology
XV.q - Path: Foreign body deposits/granulomatous reaction XV.s XV - Pathology
XV.s - Path: Pneumoconiosis (silicosis, talcosis, talcoma) XV.v XV - Pathology
XV.v - Path: Micronodular organizing pneumonia/BOOP XVI.ai XVI - Imaging
XVI.ai - Imaging: A 'tree-in-bud' pattern XVII.a XVII - Infections & related conditions
XVII.a - Respiratory tract infection incl. pneumonia 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

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.g I - Interstitial/parenchymal lung disease
I.g - Pulmonary fibrosis I.an I - Interstitial/parenchymal lung disease
I.an - Hypersensitivity pneumonitis pattern II.b II - Pulmonary edema - Acute lung injury - ARDS
II.b - ARDS - Acute lung injury XV.a XV - Pathology
XV.a - Path: NSIP-cellular pattern (see also Ia, Ib) XV.h XV - Pathology
XV.h - Path: NSIP-fibrotic pattern XV.x XV - Pathology
XV.x - Path: Acute/subacute bronchiolitis (see also IVc, IVi) XVI.b XVI - Imaging
XVI.b - Imaging: Ground-glass opacities (GGO) / shadowing XVI.c XVI - Imaging
XVI.c - Imaging: A mosaic pattern of attenuation XVI.v XVI - Imaging
XVI.v - Imaging: Centrilobular micronodules (can be diffuse)

I.b I - Interstitial/parenchymal lung disease
I.b - Pneumonitis (ILD) I.g I - Interstitial/parenchymal lung disease
I.g - Pulmonary fibrosis I.an I - Interstitial/parenchymal lung disease
I.an - Hypersensitivity pneumonitis pattern IV.a IV - Airway involvement
IV.a - Bronchospasm - Wheezing - Asthma

I.d I - Interstitial/parenchymal lung disease
I.d - Organizing pneumonia pattern (an area or areas of consolidation on imaging) I.an I - Interstitial/parenchymal lung disease
I.an - Hypersensitivity pneumonitis pattern XI.r XI - Miscellaneous
XI.r - Death following exposure or poisoning XI.s XI - Miscellaneous
XI.s - Sniffing death - Death from inhalation of compound

I.an I - Interstitial/parenchymal lung disease
I.an - Hypersensitivity pneumonitis pattern X.a X - Systemic/Distant conditions, syndromes and reactions
X.a - DRES syndrome - DRESS-like reaction