MCMedicalCodingSoftware
A39.81

A39.81: Meningococcal encephalitis

Billable / specific codeICD-10-CM

A39.81 is a billable, specific ICD-10-CM code for meningococcal encephalitis. It is valid for submission on a claim.

Check A39.81 with the rest of the claim: free scrubber

Other codes that can never be billed with A39.81

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

  • G05Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

A39.81 is named in 8 Medicare coverage policies: 8 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A56612Billing and Coding: CT of the Head
  • A56771Billing and Coding: Special Electroencephalography
  • A57204Billing and Coding: MRI and CT Scans of the Head and Neck
  • A57206Billing and Coding: Lumbar MRI

Alphabetic index entries that lead here

  • Encephalitis›meningococcal
  • Meningoencephalitis›epidemic
  • Meningomyelitis›meningococcal
  • Infection, infected, infective›meningococcal›brain

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under A39.8

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.