B51
Non-billablePlasmodium vivax malaria
B51 is the ICD-10-CM code for Plasmodium vivax malaria. It is a non-billable category code — use a more specific child code such as B51.0 for billing.
- Status
- Header (non-billable)
- Chapter
- A00-B99
- Subcodes
- 3
- Edition
- FY2026
A00-B99 Certain infectious and parasitic diseases
What this means — in plain language
MedlinePlus · NIHMalaria is a serious disease caused by a parasite. You get it when an infected mosquito bites you. Malaria is a major cause of death worldwide, but it is almost wiped out in the United States. The disease is mostly a problem in developing countries with warm climates. If you travel to these countries, you are at risk. There are four different types of malaria caused by four related parasites. The most deadly type…
Read more about Malaria at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Includes
- •mixed infections of Plasmodium vivax with other Plasmodium species, except Plasmodium falciparum
Excludes1 — not coded here
- •plasmodium vivax with Plasmodium falciparum (B50.-)
Frequently asked questions
- What is ICD-10 code B51?
- B51 is the ICD-10-CM code for "Plasmodium vivax malaria". It falls under A00-B99 Certain infectious and parasitic diseases.
- Is B51 a billable code?
- No — B51 is a non-billable header code. Use a more specific child code (such as B51.0) for billing.
- What is excluded from B51?
- Excludes1 (not coded here): plasmodium vivax with Plasmodium falciparum (B50.-).
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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