Diagnosis Code


Code Information

Diagnosis Code: A31.1

Short Description: Cutaneous mycobacterial infection

Long Description: Cutaneous mycobacterial infection

The code A31.1 is VALID for claim submission

Code Classification:

  • Certain infectious and parasitic diseases (A00–B99)
    • Other bacterial diseases (A30-A49)
      • Infection due to other mycobacteria (A31)
        • A31.1 Cutaneous mycobacterial infection

Code Version: 2022 ICD-10-CM


  • Buruli ulcer
  • Cutaneous infectious disease due to Mycobacteria
  • Cutaneous mycobacterium haemophilium infection
  • Cutaneous mycobacterium marinum infection
  • Fish tank granuloma
  • Hyperimmune cutaneous reaction to atypical mycobacteria
  • Hyperimmune cutaneous reaction to mycobacterium avium-intracellulare
  • Infection - non-suppurative
  • Infection due to Mycobacterium chelonei
  • Infection due to Mycobacterium gordonae
  • Infection due to Mycobacterium haemophilum
  • Infection due to Mycobacterium malmoense
  • Infection due to Mycobacterium marinum
  • Infection due to Mycobacterium scrofulaceum
  • Infection due to Mycobacterium szulgai
  • Infection due to Mycobacteroides abscessus
  • Mycobacterium avium intracellulare infection of skin
  • Mycobacterium fortuitum infection of skin
  • Mycobacterium gordonae infection of skin
  • Mycobacterium malmoense infection of skin
  • Mycobacterium scrofulaceum infection of skin
  • Mycobacterium szulgai infection of skin
  • Mycobacteroides abscessus infection of skin
  • Mycobacteroides chelonae infection of skin
  • Neuropathic ulceration of skin caused by Mycobacterium leprae
  • Non-pyogenic bacterial infection of skin

Diagnostic Related Group(s)

The code A31.1 is grouped in the following Diagnostic Related Group(s) (MS-DRG v39.0)
  • Minor Skin Disorders With Mcc (606)
  • Minor Skin Disorders Without Mcc (607)

References to Index of Diseases and Injuries

The code A31.1 has the following ICD-10-CM references to the Index of Diseases and Injuries
  • Inclusion Terms:
    • Buruli ulcer
    • Infection due to Mycobacterium marinum
    • Infection due to Mycobacterium ulcerans

Crosswalk Information

ICD-10 Code ICD-9 Code ICD-9 Description
A31.1 Right Arrow 031.1 Cutaneous mycobacteria

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
A31 Infection due to other mycobacteria
A31.0 Pulmonary mycobacterial infection
A31.2 Disseminated mycobacterium avium-intracellulare complex (DMAC)
A31.8 Other mycobacterial infections
A31.9 Mycobacterial infection, unspecified

This page was last updated on: 10/1/2023