All ICD10 Codes
Chapter 10

J00–J99: Diseases of the Respiratory System

Diseases of the Respiratory System diagnostic classification updated for 2026.

Chapter Instructions

Excludes2(Not included here)
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • smoke inhalation (T59.81-)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Use Additional Code
  • code, where applicable, to identify:
  • exposure to environmental tobacco smoke (Z77.22)
  • exposure to tobacco smoke in the perinatal period (P96.81)
  • history of tobacco dependence (Z87.891)
  • occupational exposure to environmental tobacco smoke (Z57.31)
  • tobacco dependence (F17.-)
  • tobacco use (Z72.0)
All CodesBillable Only
Internal Codes
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  • J11.1—

    Influenza due to unidentified influenza virus with other respiratory manifestations

  • J11.2—

    Influenza due to unidentified influenza virus with gastrointestinal manifestations

  • J11.81—

    Influenza due to unidentified influenza virus with encephalopathy

  • J11.82—

    Influenza due to unidentified influenza virus with myocarditis

  • J11.83—

    Influenza due to unidentified influenza virus with otitis media

  • J11.89—

    Influenza due to unidentified influenza virus with other manifestations

  • J12.0—

    Adenoviral pneumonia

  • J12.1—

    Respiratory syncytial virus pneumonia

  • J12.2—

    Parainfluenza virus pneumonia

  • J12.3—

    Human metapneumovirus pneumonia

  • J12.81—

    Pneumonia due to SARS-associated coronavirus

  • J12.82—

    Pneumonia due to coronavirus disease 2019

  • J12.89—

    Other viral pneumonia

  • J12.9—

    Viral pneumonia, unspecified

  • J13—

    Pneumonia due to Streptococcus pneumoniae

  • J14—

    Pneumonia due to Hemophilus influenzae

  • J15.0—

    Pneumonia due to Klebsiella pneumoniae

  • J15.1—

    Pneumonia due to Pseudomonas

  • J15.20—

    Pneumonia due to staphylococcus, unspecified

  • J15.211—

    Pneumonia due to Methicillin susceptible Staphylococcus aureus

  • J15.212—

    Pneumonia due to Methicillin resistant Staphylococcus aureus

  • J15.29—

    Pneumonia due to other staphylococcus

  • J15.3—

    Pneumonia due to streptococcus, group B

  • J15.4—

    Pneumonia due to other streptococci

  • J15.5—

    Pneumonia due to Escherichia coli

  • J15.61—

    Pneumonia due to Acinetobacter baumannii

  • J15.69—

    Pneumonia due to other Gram-negative bacteria

  • J15.7—

    Pneumonia due to Mycoplasma pneumoniae

  • J15.8—

    Pneumonia due to other specified bacteria

  • J15.9—

    Unspecified bacterial pneumonia

  • J16.0—

    Chlamydial pneumonia

  • J16.8—

    Pneumonia due to other specified infectious organisms

  • J17—

    Pneumonia in diseases classified elsewhere

  • J18.0—

    Bronchopneumonia, unspecified organism

  • J18.1—

    Lobar pneumonia, unspecified organism

  • J18.2—

    Hypostatic pneumonia, unspecified organism

  • J18.8—

    Other pneumonia, unspecified organism

  • J18.9—

    Pneumonia, unspecified organism

  • J20.0—

    Acute bronchitis due to Mycoplasma pneumoniae

  • J20.1—

    Acute bronchitis due to Hemophilus influenzae

  • J20.2—

    Acute bronchitis due to streptococcus

  • J20.3—

    Acute bronchitis due to coxsackievirus

  • J20.4—

    Acute bronchitis due to parainfluenza virus

  • J20.5—

    Acute bronchitis due to respiratory syncytial virus

  • J20.6—

    Acute bronchitis due to rhinovirus

  • J20.7—

    Acute bronchitis due to echovirus

  • J20.8—

    Acute bronchitis due to other specified organisms

  • J20.9—

    Acute bronchitis, unspecified

  • J21.0—

    Acute bronchiolitis due to respiratory syncytial virus

  • J21.1—

    Acute bronchiolitis due to human metapneumovirus

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