III.g III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.g - Bleeding/hemorrhage from/around preexisting lung tumor (Localized AH) III.k III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.k - Epistaxis VI.a VI - Pulmonary vasculopathies
VI.a - Pulmonary embolism - Venous thrombosis/thromboembolism

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 III.k III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.k - Epistaxis V.e V - Pleural and/or pericardial involvement
V.e - Hemothorax - Serosanguineous pleural effusion VIII.a VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.a - Angioedema (may cause UAO, asphyxia and death) VIII.q VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.q - Tongue involvement (edema, glossitis, hematoma) VIII.am VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.am - Hemilingual (angio)edema X.f X - Systemic/Distant conditions, syndromes and reactions
X.f - Anaphylaxis-Anaphylactoid reaction (can be fatal)

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 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 III.k III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.k - Epistaxis III.m III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.m - Coagulopathy V.e V - Pleural and/or pericardial involvement
V.e - Hemothorax - Serosanguineous pleural effusion V.n V - Pleural and/or pericardial involvement
V.n - Hemopericardium - Bloody pericardial effusion VIII.b VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.b - Hematoma of/around central airway wall potentially causing UAO IX.x IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.x - Thoracic epidural or spinal hematoma X.a X - Systemic/Distant conditions, syndromes and reactions
X.a - DRES syndrome - DRESS-like reaction XVI.j XVI - Imaging
XVI.j - Imaging: Wandering (migratory) pulmonary opacities

I.y I - Interstitial/parenchymal lung disease
I.y - Progression, acceleration or exacerbation of preexisting ILD/fibrosis 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 III.e III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.e - Pulmonary hematoma III.k III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.k - Epistaxis IV.af IV - Airway involvement
IV.af - Calcification of tracheobronchial cartilaginous rings V.e V - Pleural and/or pericardial involvement
V.e - Hemothorax - Serosanguineous pleural effusion V.n V - Pleural and/or pericardial involvement
V.n - Hemopericardium - Bloody pericardial effusion VII.g VII - Mediastinal involvement
VII.g - Hemomediastinum - Mediastinal hematoma VIII.a VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.a - Angioedema (may cause UAO, asphyxia and death) VIII.b VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.b - Hematoma of/around central airway wall potentially causing UAO VIII.q VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.q - Tongue involvement (edema, glossitis, hematoma) VIII.u VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.u - Vocal cord hematoma VIII.v VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.v - Retropharyngeal hematoma (may cause UAO) IX.x IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.x - Thoracic epidural or spinal hematoma X.a X - Systemic/Distant conditions, syndromes and reactions
X.a - DRES syndrome - DRESS-like reaction XI.k XI - Miscellaneous
XI.k - Esophageal hematoma (may cause chest pain and/or tracheal compression) XI.am XI - Miscellaneous
XI.am - Rectus abdominis hematoma XII.ar XII - Cardiovascular involvement / toxicity
XII.ar - Calcification of the coronary artery walls or atheroma XIX.d XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.d - BAL: Gross or microscopic bleeding/hemorrhage XIX.e XIX - Cytological, biochemical features of/in BAL, pleural fluid or FNA
XIX.e - BAL: Stainable iron in macrophages XXIV.e XXIV - Veterinary medicine
XXIV.e - Veterinary: Tracheal hemorrhage, stenosis, collapse

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 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 III.g III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.g - Bleeding/hemorrhage from/around preexisting lung tumor (Localized AH) III.h III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.h - Major/massive hemoptysis III.k III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.k - Epistaxis IV.a IV - Airway involvement
IV.a - Bronchospasm - Wheezing - Asthma V.f V - Pleural and/or pericardial involvement
V.f - Pneumothorax VI.a VI - Pulmonary vasculopathies
VI.a - Pulmonary embolism - Venous thrombosis/thromboembolism VI.b VI - Pulmonary vasculopathies
VI.b - Pulmonary arterial hypertension VIII.o VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.o - Perforation of the nasal septum VIII.r VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.r - Tracheal/large airway necrosis, chondronecrosis, perforation VIII.ab VIII - Central-large-upper airway (incl. pharyngeal-nasal) involvement
VIII.ab - Airway (e.g. tracheoesophageal) fistula 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.w XI - Miscellaneous
XI.w - Cavitation/necrosis of lung tumor or metastases 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.ai XII - Cardiovascular involvement / toxicity
XII.ai - Cardiotoxicity XII.aj XII - Cardiovascular involvement / toxicity
XII.aj - Systemic arterial thrombosis XII.at XII - Cardiovascular involvement / toxicity
XII.at - Aortitis 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.bf XVI - Imaging
XVI.bf - Imaging: Tumoral cavitation

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.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.k III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.k - Epistaxis IV.d IV - Airway involvement
IV.d - Cough (lone) IV.e IV - Airway involvement
IV.e - Cough (acute, violent, explosive) IV.aa IV - Airway involvement
IV.aa - Occupational asthma IV.ab IV - Airway involvement
IV.ab - Exacerbation or deterioration of preexisting COPD 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 IX.c IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.c - Chest wall muscle rigidity - Stiff/wooden chest IX.d IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.d - Respiratory failure from ventilatory depression (due to neuromuscular blockade/paralysis) IX.e IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.e - Disordered breathing pattern - Cheynes-Stokes respiration IX.f IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.f - Hiccup IX.i IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.i - Respiratory arrest - Apnea IX.p IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.p - Disordered breathing during sleep - Sleep apnea IX.t IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.t - CNS involvement/dysfunction/damage IX.u IX - Neuromuscular / CNS involvement - Disordered breathing during sleep
IX.u - Central sleep apnea X.f X - Systemic/Distant conditions, syndromes and reactions
X.f - Anaphylaxis-Anaphylactoid reaction (can be fatal) X.af X - Systemic/Distant conditions, syndromes and reactions
X.af - Thrombotic microangiopathy XI.e XI - Miscellaneous
XI.e - Respiratory acidosis - Hypercapnia XI.r XI - Miscellaneous
XI.r - Death following exposure or poisoning XII.e XII - Cardiovascular involvement / toxicity
XII.e - Takotsubo (stress) cardiomyopathy XII.f XII - Cardiovascular involvement / toxicity
XII.f - Cardiomyopathy (acute, subacute, chronic) XII.j XII - Cardiovascular involvement / toxicity
XII.j - Myocardial stunning

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 III.k III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.k - Epistaxis III.m III - Pulmonary/alveolar./airway hemorrhage/bleeding
III.m - Coagulopathy XXIV.d XXIV - Veterinary medicine
XXIV.d - Veterinary: Pulmonary bleeding (hemoptysis, alveolar hemorrhage)