MCMCB Pro
B40.81

B40.81Blastomycotic meningoencephalitis

Billable / specific codeICD-10-CM

B40.81 is a billable, specific ICD-10-CM code for blastomycotic meningoencephalitis. It is valid for submission on a claim.

Inclusion terms

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

  • Meningomyelitis due to blastomycosis

Risk adjustment

B40.81 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

B40.81 is named in 1 Medicare coverage policy 1 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A57224Billing and Coding: Respiratory Care

How B40.81 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to B40.81.

  • Meningomyelitisblastomycotic NEC
  • Meningoencephalitisinblastomycosis NEC

Related codes at this level

Codes that share B40.8. If B40.81 is not quite right, the correct code is usually one of these.

Questions about B40.81

Is B40.81 a billable ICD-10-CM code?
Yes. B40.81 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does B40.81 sit in the tabular list?
Certain infectious and parasitic diseases (A00-B99), in the block Mycoses (B35-B49).
ICD-10-CMFY2026-Apr· effective April 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.