Plasmodium vivax malaria (B51) ICD-10-CM
The B51 code range covers plasmodium vivax malaria with 4 ICD-10-CM diagnosis codes. 3 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
- mixed infections of Plasmodium vivax with other Plasmodium species, except Plasmodium falciparum
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- plasmodium vivax with Plasmodium falciparum B50
Codes in the B51 Range 4 codes · 3 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the B51 range.
Malaria, Vivax
Malaria caused by PLASMODIUM VIVAX. This form of malaria is less severe than MALARIA, FALCIPARUM, but there is a higher probability for relapses to occur. Febrile paroxysms often occur every other day.
About the B51 Code Range
Vivax malaria is malaria caused by Plasmodium vivax. It sits within the protozoal diseases.
B51 separates cases by complication: B51.0 identifies a ruptured spleen, B51.8 identifies other complications, and B51.9 identifies no complication.
Questions About This Page
How many billable codes are in the B51 range?
Of the 4 codes in this range, 3 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the B51 range classify?
The range classifies plasmodium vivax malaria. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
