B51
ICD-10Non-billable categoryPlasmodium vivax malaria
Official ICD-10-CM descriptor (FY2026)
Plasmodium vivax malaria
B51 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Includes
- mixed infections of Plasmodium vivax with other Plasmodium species, except Plasmodium falciparum
Excludes1
Not coded here. An Excludes1 code should never be reported at the same time as the code above it.
- plasmodium vivax with Plasmodium falciparum (B50.-)
More specific codes under B51
Where this code sits
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.