2020 ICD-10-CM Diagnosis Code J15.9

Unspecified bacterial pneumonia

    2016 2017 2018 2019 2020 Billable/Specific Code
  • J15.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM J15.9 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of J15.9 - other international versions of ICD-10 J15.9 may differ.
Applicable To
  • Pneumonia due to gram-positive bacteria
The following code(s) above J15.9 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to J15.9:
  • J00-J99
    2020 ICD-10-CM Range J00-J99

    Diseases of the respiratory system

    • When a respiratory condition is described as occurring in more than one site and is not specifically indexed, it should be classified to the lower anatomic site (e.g. tracheobronchitis to bronchitis in J40).
    Type 2 Excludes
    • 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, 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)
    Diseases of the respiratory system
  • J09-J18
    2020 ICD-10-CM Range J09-J18

    Influenza and pneumonia

    Type 2 Excludes
    • allergic or eosinophilic pneumonia (J82)
    • aspiration pneumonia NOS (J69.0)
    • meconium pneumonia (P24.01)
    • neonatal aspiration pneumonia (P24.-)
    • pneumonia due to solids and liquids (J69.-)
    • congenital pneumonia (P23.9)
    • lipid pneumonia (J69.1)
    • rheumatic pneumonia (I00)
    • ventilator associated pneumonia (J95.851)
    Influenza and pneumonia
  • J15
    ICD-10-CM Diagnosis Code J15

    Bacterial pneumonia, not elsewhere classified

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Code First
    Code Also
    • associated abscess, if applicable (J85.1)
    • bronchopneumonia due to bacteria other than S. pneumoniae and H. influenzae
    Type 1 Excludes
    • chlamydial pneumonia (J16.0)
    • congenital pneumonia (P23.-)
    • Legionnaires' disease (A48.1)
    • spirochetal pneumonia (A69.8)
    Bacterial pneumonia, not elsewhere classified
Approximate Synonyms
  • Bacterial bronchopneumonia
  • Bacterial pneumonia
  • Bronchopneumonia due to bacteria
Clinical Information
  • Inflammation of the lung parenchyma that is caused by bacterial infections.
  • Pneumonia caused by various species of bacteria; commonly results from bronchogenic spread of infection following microaspiration of secretions.
ICD-10-CM J15.9 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 193 Simple pneumonia and pleurisy with mcc
  • 194 Simple pneumonia and pleurisy with cc
  • 195 Simple pneumonia and pleurisy without cc/mcc
  • 791 Prematurity with major problems
  • 793 Full term neonate with major problems
  • 974 Hiv with major related condition with mcc
  • 975 Hiv with major related condition with cc
  • 976 Hiv with major related condition without cc/mcc

Convert J15.9 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change

Diagnosis Index entries containing back-references to J15.9:
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved) J18.9
    ICD-10-CM Diagnosis Code J18.9

    Pneumonia, unspecified organism

      2016 2017 2018 2019 2020 Billable/Specific Code
    • aspiration J69.0
      ICD-10-CM Diagnosis Code J69.0

      Pneumonitis due to inhalation of food and vomit

        2016 2017 2018 2019 2020 Billable/Specific Code
      Applicable To
      • Aspiration pneumonia NOS
      • Aspiration pneumonia (due to) food (regurgitated)
      • Aspiration pneumonia (due to) gastric secretions
      • Aspiration pneumonia (due to) milk
      • Aspiration pneumonia (due to) vomit
      Code Also
      • any associated foreign body in respiratory tract (T17.-)
      Type 1 Excludes
      • chemical pneumonitis due to anesthesia (J95.4)
      • obstetric aspiration pneumonitis (O74.0)
    • bacillus J15.9
    • bacterial J15.9
    • broncho-, bronchial (confluent) (croupous) (diffuse) (disseminated) (hemorrhagic) (involving lobes) (lobar) (terminal) J18.0
      ICD-10-CM Diagnosis Code J18.0

      Bronchopneumonia, unspecified organism

        2016 2017 2018 2019 2020 Billable/Specific Code
      Type 1 Excludes
      • hypostatic bronchopneumonia (J18.2)
      • lipid pneumonia (J69.1)
      Type 2 Excludes
      • acute bronchiolitis (J21.-)
      • chronic bronchiolitis (J44.9)
    • lobar (disseminated) (double) (interstitial) J18.1
      ICD-10-CM Diagnosis Code J18.1

      Lobar pneumonia, unspecified organism

        2016 2017 2018 2019 2020 Billable/Specific Code

ICD-10-CM Codes Adjacent To J15.9
J15.21 Pneumonia due to staphylococcus aureus
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
J15.6 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 Pneumonia due to other infectious organisms, not elsewhere classified
J16.0 Chlamydial pneumonia
J16.8 Pneumonia due to other specified infectious organisms
J17 Pneumonia in diseases classified elsewhere
J18 Pneumonia, unspecified organism
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

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.