B52 — Plasmodium malariae malaria
B52 is a non-billable header ICD-10-CM code for plasmodium malariae malaria. It cannot be billed on its own: choose one of the more specific child codes below.
Excludes1 — never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
Includes
Conditions this code covers.
- mixed infections of Plasmodium malariae with other Plasmodium species, except Plasmodium falciparum and Plasmodium vivax
Other codes that can never be billed with B52
These codes carry an Excludes1 note pointing at B52. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading B52 alone.
Risk adjustment
B52 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.
Code history
B52 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.
Code to one of these instead B52
3 child codes. Green means billable.
Questions about B52
- Is B52 a billable ICD-10-CM code?
- No. B52 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does B52 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 B52?
- B52 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter.