B51.9 – Plasmodium vivax malaria without complication
ICD-10-CM 2027 diagnosis code · Protozoal diseases
ICD-10-CM code
B51.9
- Code
B51.9(claims format:B519)- Description
- Plasmodium vivax malaria without complication
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 1. Certain infectious and parasitic diseases (A00-B99)
- Block
- B50-B64 Protozoal diseases
- Parent codes
- B51
Notes for B51.9
Applicable to:
- Plasmodium vivax malaria NOS
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
B51 – Plasmodium vivax malaria
Includes:
- mixed infections of Plasmodium vivax with other Plasmodium species, except Plasmodium falciparum
Excludes1 (not coded here):
- plasmodium vivax with Plasmodium falciparum (B50.-)
Block B50-B64
Index terms for B51.9
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in B51
Frequently asked questions
What is ICD-10 code B51.9?
B51.9 is the ICD-10-CM code for plasmodium vivax malaria without complication, in the block B50-B64 (Protozoal diseases).
Is B51.9 a billable code?
Yes. B51.9 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does B51.9 belong to?
It belongs to category B51 – Plasmodium vivax malaria.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.