Diagnosis Code


Code Information

Diagnosis Code: A43.9

Short Description: Nocardiosis, unspecified

Long Description: Nocardiosis, unspecified

The code A43.9 is VALID for claim submission

Code Classification:

  • Certain infectious and parasitic diseases (A00–B99)
    • Other bacterial diseases (A30-A49)
      • Nocardiosis (A43)
        • A43.9 Nocardiosis, unspecified

Code Version: 2020 ICD-10-CM


  • Actinomycetoma due to Nocardia infection
  • Infection caused by Nocardia co-occurrent with human immunodeficiency virus infection
  • Nocardia abscessus or Nocardia arthritidis
  • Nocardiosis
  • Nocardiosis associated with AIDS

Diagnostic Related Group(s)

The code A43.9 is grouped in the following Diagnostic Related Group(s) (MS-DRG v37.0)
  • Other Infectious And Parasitic Diseases Diagnoses With Mcc (867)
  • Other Infectious And Parasitic Diseases Diagnoses With Cc (868)
  • Other Infectious And Parasitic Diseases Diagnoses Without Cc/mcc (869)

Crosswalk Information

ICD-10 Code ICD-9 Code ICD-9 Description
A43.9 Right Arrow 039.9 Actinomycosis NOS

This ICD-10 to ICD-9 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-10 Code ICD-10 Description
A43 Nocardiosis
A43.0 Pulmonary nocardiosis
A43.1 Cutaneous nocardiosis
A43.8 Other forms of nocardiosis

This page was last updated on: 10/1/2020