2024 ICD-10-CM Diagnosis Code A42.9

by

Actinomycosis, unspecified

  • A42.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2024 edition of ICD-10-CM A42.9 became effective on October 1, 2023.
  • This is the American ICD-10-CM version of A42.9 – other international versions of ICD-10 A42.9 may differ.

The following code(s) above A42.9 contain annotation back-references

 that may be applicable to A42.9:

  • A00-B99  Certain infectious and parasitic diseases
  • A42  Actinomycosis

Approximate Synonyms

  • Actinomycosis
  • Actinomycotic infection

Clinical Information

  • An infectious process caused by bacteria of the actinomyces species. It is characterized by the formation of purulent and painful abscesses in the mouth, lungs and gastrointestinal tract.
  • Infections with bacteria of the genus actinomyces.

ICD-10-CM A42.9 is grouped within Diagnostic Related Group(s) (MS-DRG v41.0):

  • 867 Other infectious and parasitic diseases diagnoses with mcc
  • 868 Other infectious and parasitic diseases diagnoses with cc
  • 869 Other infectious and parasitic diseases diagnoses 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 A42.9 to ICD-9-CMCode 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
  • 2024 (effective 10/1/2023): No change

Diagnosis Index entries containing back-references to A42.9: