B51.0 — Plasmodium vivax malaria with rupture of spleen
B51.0 is a billable, specific ICD-10-CM code for plasmodium vivax malaria with rupture of spleen. It is valid for submission on a claim.
Excludes1 inherited from the categories above B51.0
These are not written on B51.0, but they bind it: a note on a category applies to every code beneath it. Billing B51.0 with anything listed here is a denial.
Other codes that can never be billed with B51.0
These codes carry an Excludes1 note pointing at B51.0. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading B51.0 alone.
Risk adjustment
B51.0 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
B51.0 is named in 3 Medicare coverage policies — 3 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A58801Billing and Coding: Pharmacogenomics Testing
- A58812Billing and Coding: Pharmacogenomics Testing
- A59915Billing and Coding: Pharmacogenomic Testing
How B51.0 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 B51.0.
- Rupture, ruptured›spleen›due to P. vivax malaria
- Malaria, malarial›vivax›with›ruptured spleen
Code history
B51.0 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.
Related codes at this level
Codes that share B51. If B51.0 is not quite right, the correct code is usually one of these.
Questions about B51.0
- Is B51.0 a billable ICD-10-CM code?
- Yes. B51.0 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does B51.0 sit in the tabular list?
- Certain infectious and parasitic diseases (A00-B99), in the block Protozoal diseases (B50-B64).
- What cannot be coded together with B51.0?
- B51.0 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above B51.0 (B51) and apply to it just the same.