B50.9 – Plasmodium falciparum malaria, unspecified
ICD-10-CM 2027 diagnosis code · Protozoal diseases
ICD-10-CM code
B50.9
- Code
B50.9(claims format:B509)- Description
- Plasmodium falciparum malaria, unspecified
- 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
- B50
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
B50 – Plasmodium falciparum malaria
Includes:
- mixed infections of Plasmodium falciparum with any other Plasmodium species
Block B50-B64
Index terms for B50.9
Entries in the ICD-10-CM alphabetic index that lead to this code:
- Chagres fever
- Fever, Panama
- Fever, Chagres
- Fever, subtertian
- Fever, estivo-autumnal
- Estivo-autumnal malaria
- Malaria, malarial, algid
- Fever, continued malarial
- Malaria, malarial, tropical
- Malaria, malarial, continued
- Malaria, malarial, falciparum
- Fever, intermittent, pernicious
- Malaria, malarial, estivo-autumnal
- Malaria, malarial, tertian, malignant
Related codes in B50
Frequently asked questions
What is ICD-10 code B50.9?
B50.9 is the ICD-10-CM code for plasmodium falciparum malaria, unspecified, in the block B50-B64 (Protozoal diseases).
Is B50.9 a billable code?
Yes. B50.9 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does B50.9 belong to?
It belongs to category B50 – Plasmodium falciparum 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.