MCMedicalCodingSoftware
A48.0

A48.0: Gas gangrene

Billable / specific codeICD-10-CM

A48.0 is a billable, specific ICD-10-CM code for gas gangrene. It is valid for submission on a claim.

Check A48.0 with the rest of the claim: free scrubber

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Clostridial cellulitis
  • Clostridial myonecrosis

Excludes1 inherited from the categories above A48.0

A category’s note binds every code beneath it.

Written on A48: Other bacterial diseases, not elsewhere classified

Other codes that can never be billed with A48.0

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • I96Gangrene, not elsewhere classified
  • A41.4Sepsis due to anaerobes

Risk adjustment

A48.0 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

  • HCC 263 Atherosclerosis of Arteries of the Extremities with Ulceration or Gangrene1.118 RAF

Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score. Look up the whole chart to see which of its HCCs the hierarchy would zero.

Medicare coverage

A48.0 is named in 10 Medicare coverage policies: 10 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A55909Billing and Coding: Wound Care
  • A56459Billing and Coding: Debridement Services
  • A56697Billing and Coding: Non-Invasive Vascular Studies
  • A57221Billing and Coding: Plastic Surgery

Alphabetic index entries that lead here

  • Aerogenes capsulatus infection
  • Myonecrosis, clostridial
  • Abscess›anerobic
  • Cellulitis›anaerobic
  • Cellulitis›clostridial
  • Gangrene, gangrenous›Bacillus welchii
  • Gangrene, gangrenous›Clostridium perfringens or welchii
  • Gangrene, gangrenous›gas(bacillus)
  • Gas›gangrene
  • Infection, infected, infective›aerogenes capsulatus
  • Myositis›clostridial
  • Infection, infected, infective›Bacillus›gas(gangrene)

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under A48

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.