B77.81 — Ascariasis pneumonia
B77.81 is a billable, specific ICD-10-CM code for ascariasis pneumonia. It is valid for submission on a claim.
Other codes that can never be billed with B77.81
These codes carry an Excludes1 note pointing at B77.81. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading B77.81 alone.
- J17Pneumonia in diseases classified elsewhere
Risk adjustment
B77.81 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
B77.81 is named in 10 Medicare coverage policies — 10 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A52466Nebulizers - Policy Article
- A52466Nebulizers - Policy Article
- A52466Nebulizers - Policy Article
- A52466Nebulizers - Policy Article
How B77.81 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 B77.81.
- Pneumonia›Ascaris
- Ascariasis›with›pneumonia, pneumonitis
- Pneumonia›in›ascariasis
Related codes at this level
Codes that share B77.8. If B77.81 is not quite right, the correct code is usually one of these.
Questions about B77.81
- Is B77.81 a billable ICD-10-CM code?
- Yes. B77.81 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does B77.81 sit in the tabular list?
- Certain infectious and parasitic diseases (A00-B99), in the block Helminthiases (B65-B83).