A32.12 — Listerial meningoencephalitis
A32.12 is a billable, specific ICD-10-CM code for listerial meningoencephalitis. It is valid for submission on a claim.
Other codes that can never be billed with A32.12
These codes carry an Excludes1 note pointing at A32.12. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading A32.12 alone.
- G05Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere
Risk adjustment
A32.12 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
A32.12 is named in 5 Medicare coverage policies — 5 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A57204Billing and Coding: MRI and CT Scans of the Head and Neck
- A58710Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing
- A58720Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing
- A58747Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing
How A32.12 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 A32.12.
- Meningoencephalitis›Listeria monocytogenes
- Encephalitis›in›listeriosis
Related codes at this level
Codes that share A32.1. If A32.12 is not quite right, the correct code is usually one of these.
Questions about A32.12
- Is A32.12 a billable ICD-10-CM code?
- Yes. A32.12 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does A32.12 sit in the tabular list?
- Certain infectious and parasitic diseases (A00-B99), in the block Other bacterial diseases (A30-A49).