2019/2020

  1. ICD-10-CM Codes
    2. ›
  2. A00-B99 Certain infectious and parasitic diseases
    3. ›
  3. A30-A49 Other bacterial diseases
    4. ›
  4. A42- Actinomycosis
    5. ›

2020 ICD-10-CM Diagnosis Code A42.0

Pulmonary actinomycosis

    2016 2017 2018 2019 2020 Billable/Specific Code
  • A42.0 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 A42.0 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of A42.0 - other international versions of ICD-10 A42.0 may differ.
The following code(s) above A42.0 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 A42.0:
  • A00-B99
    2020 ICD-10-CM Range A00-B99

    Certain infectious and parasitic diseases

    Includes
    • diseases generally recognized as communicable or transmissible
    Type 1 Excludes
    • certain localized infections - see body system-related chapters
    Type 2 Excludes
    • carrier or suspected carrier of infectious disease (Z22.-)
    • infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
    • infectious and parasitic diseases specific to the perinatal period (P35-P39)
    • influenza and other acute respiratory infections (J00-J22)
    Use Additional
    • code to identify resistance to antimicrobial drugs (Z16.-)
    Certain infectious and parasitic diseases
  • A42
    ICD-10-CM Diagnosis Code A42

    Actinomycosis

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    Actinomycosis
Approximate Synonyms
  • Actinomycosis infection of lung
ICD-10-CM A42.0 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 177 Respiratory infections and inflammations with mcc
  • 178 Respiratory infections and inflammations with cc
  • 179 Respiratory infections and inflammations without cc/mcc
  • 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 A42.0 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
Code annotations containing back-references to A42.0:
  • Type 1 Excludes: J17
    ICD-10-CM Diagnosis Code J17

    Pneumonia in diseases classified elsewhere

      2016 2017 2018 2019 2020 Billable/Specific Code Manifestation Code
    Code First
    • underlying disease, such as:
    • Q fever (A78)
    • rheumatic fever (I00)
    • schistosomiasis (B65.0-B65.9)
    Type 1 Excludes
    • candidial pneumonia (B37.1)
    • chlamydial pneumonia (J16.0)
    • gonorrheal pneumonia (A54.84)
    • histoplasmosis pneumonia (B39.0-B39.2)
    • measles pneumonia (B05.2)
    • nocardiosis pneumonia (A43.0)
    • pneumocystosis (B59)
    • pneumonia due to Pneumocystis carinii (B59)
    • pneumonia due to Pneumocystis jiroveci (B59)
    • pneumonia in actinomycosis (A42.0)
    • pneumonia in anthrax (A22.1)
    • pneumonia in ascariasis (B77.81)
    • pneumonia in aspergillosis (B44.0-B44.1)
    • pneumonia in coccidioidomycosis (B38.0-B38.2)
    • pneumonia in cytomegalovirus disease (B25.0)
    • pneumonia in toxoplasmosis (B58.3)
    • rubella pneumonia (B06.81)
    • salmonella pneumonia (A02.22)
    • spirochetal infection NEC with pneumonia (A69.8)
    • tularemia pneumonia (A21.2)
    • typhoid fever with pneumonia (A01.03)
    • varicella pneumonia (B01.2)
    • whooping cough with pneumonia (A37 with fifth-character 1)

Diagnosis Index entries containing back-references to A42.0:
  • Actinomycosis, actinomycotic A42.9
    ICD-10-CM Diagnosis Code A42.9

    Actinomycosis, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    • with pneumonia A42.0
    • pulmonary A42.0
  • 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
    • in (due to)
      • actinomycosis A42.0

ICD-10-CM Codes Adjacent To A42.0
A41.50 Gram-negative sepsis, unspecified
A41.51 Sepsis due to Escherichia coli [E. coli]
A41.52 Sepsis due to Pseudomonas
A41.53 Sepsis due to Serratia
A41.59 Other Gram-negative sepsis
A41.8 Other specified sepsis
A41.81 Sepsis due to Enterococcus
A41.89 Other specified sepsis
A41.9 Sepsis, unspecified organism
A42 Actinomycosis
A42.0 Pulmonary actinomycosis
A42.1 Abdominal actinomycosis
A42.2 Cervicofacial actinomycosis
A42.7 Actinomycotic sepsis
A42.8 Other forms of actinomycosis
A42.81 Actinomycotic meningitis
A42.82 Actinomycotic encephalitis
A42.89 Other forms of actinomycosis
A42.9 Actinomycosis, unspecified
A43 Nocardiosis
A43.0 Pulmonary nocardiosis

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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