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B50

B50Plasmodium falciparum malaria

Non-billable headerICD-10-CM

B50 is a non-billable header ICD-10-CM code for plasmodium falciparum malaria. It cannot be billed on its own: choose one of the more specific child codes below.

Includes

Conditions this code covers.

  • mixed infections of Plasmodium falciparum with any other Plasmodium species

Other codes that can never be billed with B50

These codes carry an Excludes1 note pointing at B50. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading B50 alone.

  • B51Plasmodium vivax malaria
  • B52Plasmodium malariae malaria
  • B53.0Plasmodium ovale malaria
  • B53.1Malaria due to simian plasmodia

Risk adjustment

B50 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 B50

3 child codes. Green means billable.

Questions about B50

Is B50 a billable ICD-10-CM code?
No. B50 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does B50 sit in the tabular list?
Certain infectious and parasitic diseases (A00-B99), in the block Protozoal diseases (B50-B64).
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.