MCMCB Pro
B52

B52Plasmodium malariae malaria

Non-billable headerICD-10-CM

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.

  • Plasmodium falciparum (B50.-)
  • Plasmodium vivax (B51.-)

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.

  • B53.0Plasmodium ovale malaria
  • B53.1Malaria due to simian plasmodia

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 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 an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.