2023

  1. ICD-10-CM Codes
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  2. J00-J99
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  3. J09-J18
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  4. J18-
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  5. 2023 ICD-10-CM Diagnosis Code J18

2023 ICD-10-CM Diagnosis Code J18

Pneumonia, unspecified organism

    2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
  • J18 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2023 edition of ICD-10-CM J18 became effective on October 1, 2022.
  • This is the American ICD-10-CM version of J18 - other international versions of ICD-10 J18 may differ.
Code First
Code First Help
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation. In most cases the manifestation codes will have in the code title, "in diseases classified elsewhere." Codes with this title are a component of the etiology/manifestation convention. The code title indicates that it is a manifestation code. "In diseases classified elsewhere" codes are never permitted to be used as first listed or principle diagnosis codes. They must be used in conjunction with an underlying condition code and they must be listed following the underlying condition.
  • associated influenza, if applicable (
    ICD-10-CM Diagnosis Code J09.X1

    Influenza due to identified novel influenza A virus with pneumonia

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
    Code Also
    • , if applicable, associated:
    • lung abscess (J85.1)
    • other specified type of pneumonia
    J09.X1
    ,
    ICD-10-CM Diagnosis Code J10.0

    Influenza due to other identified influenza virus with pneumonia

      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    Code Also
    • associated lung abscess, if applicable (J85.1)
    J10.0-
    ,
    ICD-10-CM Diagnosis Code J11.0

    Influenza due to unidentified influenza virus with pneumonia

      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    Code Also
    • associated lung abscess, if applicable (J85.1)
    J11.0-
    )
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as J18. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • abscess of lung with pneumonia (
    ICD-10-CM Diagnosis Code J85.1

    Abscess of lung with pneumonia

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
    Code Also
    • the type of pneumonia
    J85.1
    )
  • aspiration pneumonia due to anesthesia during labor and delivery (
    ICD-10-CM Diagnosis Code O74.0

    Aspiration pneumonitis due to anesthesia during labor and delivery

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Maternity Dx (12-55 years) Female Dx
    Applicable To
    • Inhalation of stomach contents or secretions NOS due to anesthesia during labor and delivery
    • Mendelson's syndrome due to anesthesia during labor and delivery
    O74.0
    )
  • aspiration pneumonia due to anesthesia during pregnancy (
    ICD-10-CM Diagnosis Code O29

    Complications of anesthesia during pregnancy

      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    Includes
    • maternal complications arising from the administration of a general, regional or local anesthetic, analgesic or other sedation during pregnancy
    Type 2 Excludes
    • complications of anesthesia during labor and delivery (O74.-)
    • complications of anesthesia during the puerperium (O89.-)
    Use Additional
    • code, if necessary, to identify the complication
    O29
    )
  • aspiration pneumonia due to anesthesia during puerperium (
    ICD-10-CM Diagnosis Code O89.0

    Pulmonary complications of anesthesia during the puerperium

      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    O89.0
    )
  • aspiration pneumonia due to solids and liquids (
    ICD-10-CM Diagnosis Code J69
    • J69 Pneumonitis due to solids and liquids
      • J69.0 Pneumonitis due to inhalation of food and vom...
      • J69.1 Pneumonitis due to inhalation of oils and ess...
      • J69.8 Pneumonitis due to inhalation of other solids...
    J69.-
    )
  • aspiration pneumonia NOS (
    ICD-10-CM Diagnosis Code J69.0

    Pneumonitis due to inhalation of food and vomit

      2016 2017 2018 2019 2020 2021 2022 2023 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)
    J69.0
    )
  • congenital pneumonia (
    ICD-10-CM Diagnosis Code P23.0

    Congenital pneumonia due to viral agent

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Code on Newborn Record
    Type 1 Excludes
    • congenital rubella pneumonitis (P35.0)
    Use Additional
    • code (B97) to identify organism
    P23.0
    )
  • drug-induced interstitial lung disorder (
    ICD-10-CM Diagnosis Code J70.2

    Acute drug-induced interstitial lung disorders

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
    Type 1 Excludes
    • interstitial pneumonia NOS (J84.9)
    • lymphoid interstitial pneumonia (J84.2)
    Use Additional
    • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
    J70.2-
    ICD-10-CM Diagnosis Code J70.4

    Drug-induced interstitial lung disorders, unspecified

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
    Type 1 Excludes
    • interstitial pneumonia NOS (J84.9)
    • lymphoid interstitial pneumonia (J84.2)
    Use Additional
    • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
    J70.4
    )
  • interstitial pneumonia NOS (
    ICD-10-CM Diagnosis Code J84.9

    Interstitial pulmonary disease, unspecified

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
    Applicable To
    • Interstitial pneumonia NOS
    J84.9
    )
  • lipid pneumonia (
    ICD-10-CM Diagnosis Code J69.1

    Pneumonitis due to inhalation of oils and essences

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
    Applicable To
    • Exogenous lipoid pneumonia
    • Lipid pneumonia NOS
    Code First
    Type 1 Excludes
    • endogenous lipoid pneumonia (J84.89)
    J69.1
    )
  • neonatal aspiration pneumonia (
    ICD-10-CM Diagnosis Code P24
    • P24 Neonatal aspiration
      • P24.0 Meconium aspiration
        • P24.00 Meconium aspiration without respiratory sympt...
        • P24.01 Meconium aspiration with respiratory symptoms...
      • P24.1 Neonatal aspiration of (clear) amniotic fluid...
        • P24.10 Neonatal aspiration of (clear) amniotic fluid...
        • P24.11 Neonatal aspiration of (clear) amniotic fluid...
      • P24.2 Neonatal aspiration of blood
        • P24.20 Neonatal aspiration of blood without respirat...
        • P24.21 Neonatal aspiration of blood with respiratory...
      • P24.3 Neonatal aspiration of milk and regurgitated ...
        • P24.30 Neonatal aspiration of milk and regurgitated ...
        • P24.31 Neonatal aspiration of milk and regurgitated ...
      • P24.8 Other neonatal aspiration
        • P24.80 Other neonatal aspiration without respiratory...
        • P24.81 Other neonatal aspiration with respiratory sy...
      • P24.9 Neonatal aspiration, unspecified
    P24.-
    )
  • pneumonitis due to external agents (
    ICD-10-CM Diagnosis Code J67

    Hypersensitivity pneumonitis due to organic dust

      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    Includes
    • allergic alveolitis and pneumonitis due to inhaled organic dust and particles of fungal, actinomycetic or other origin
    Type 1 Excludes
    • pneumonitis due to inhalation of chemicals, gases, fumes or vapors (J68.0)
    J67
    -
    ICD-10-CM Diagnosis Code J70

    Respiratory conditions due to other external agents

      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    J70
    )
  • pneumonitis due to fumes and vapors (
    ICD-10-CM Diagnosis Code J68.0

    Bronchitis and pneumonitis due to chemicals, gases, fumes and vapors

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
    Applicable To
    • Chemical bronchitis (acute)
    J68.0
    )
  • usual interstitial pneumonia (
    ICD-10-CM Diagnosis Code J84.178

    Other interstitial pulmonary diseases with fibrosis in diseases classified elsewhere

      2021 - New Code 2022 2023 Billable/Specific Code Manifestation Code
    Applicable To
    • Interstitial pneumonia (nonspecific) (usual) due to collagen vascular disease
    • Interstitial pneumonia (nonspecific) (usual) in diseases classified elsewhere
    • Organizing pneumonia due to collagen vascular disease
    • Organizing pneumonia in diseases classified elsewhere
    Code First
    • underlying disease, such as:
    • progressive systemic sclerosis (M34.0)
    • rheumatoid arthritis (M05.00-M06.9)
    • systemic lupus erythematosis (M32.0-M32.9)
    J84.178
    )
The following code(s) above J18 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 J18:
  • J00-J99
    2023 ICD-10-CM Range J00-J99

    Diseases of the respiratory system

    Note
    • 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
    2023 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
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
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
ICD-10-CM Codes Adjacent To J18
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
J20 Acute bronchitis
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

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

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