A42.82 — Actinomycotic encephalitis
A42.82 is a billable, specific ICD-10-CM code for actinomycotic encephalitis. It is valid for submission on a claim.
Risk adjustment
A42.82 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
A42.82 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.
- A56771Billing and Coding: Special Electroencephalography
How A42.82 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 A42.82.
- Encephalitis›in›actinomycosis
- Meningoencephalomyelitis›due to›actinomycosis
Related codes at this level
Codes that share A42.8. If A42.82 is not quite right, the correct code is usually one of these.
Questions about A42.82
- Is A42.82 a billable ICD-10-CM code?
- Yes. A42.82 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does A42.82 sit in the tabular list?
- Certain infectious and parasitic diseases (A00-B99), in the block Other bacterial diseases (A30-A49).