B16.2 — Acute hepatitis B without delta-agent with hepatic coma
B16.2 is a billable, specific ICD-10-CM code for acute hepatitis b without delta-agent with hepatic coma. It is valid for submission on a claim.
Risk adjustment
B16.2 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
B16.2 is named in 2 Medicare coverage policies — 2 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A56421Billing and Coding: CT of the Abdomen and Pelvis
- A57554Billing and Coding: Immune Globulins
How B16.2 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 B16.2.
- Hepatitis›B›acute›with›hepatic coma(without delta-agent coinfection)
- Hepatitis›viral, virus›type›B›acute›with›hepatic coma(without delta-agent coinfection)
Related codes at this level
Codes that share B16. If B16.2 is not quite right, the correct code is usually one of these.
Questions about B16.2
- Is B16.2 a billable ICD-10-CM code?
- Yes. B16.2 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does B16.2 sit in the tabular list?
- Certain infectious and parasitic diseases (A00-B99), in the block Viral hepatitis (B15-B19).