African trypanosomiasis (B56) ICD-10-CM
The B56 code range covers african trypanosomiasis with 4 ICD-10-CM diagnosis codes. 3 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Codes in the B56 Range 4 codes · 3 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the B56 range.
Chagas Cardiomyopathy
A disease of the CARDIAC MUSCLE developed subsequent to the initial protozoan infection by TRYPANOSOMA CRUZI. After infection, less than 10% develop acute illness such as MYOCARDITIS (mostly in children). The disease then enters a latent phase without clinical symptoms until about 20 years later. Myocardial symptoms of advanced CHAGAS DISEASE include conduction defects (HEART BLOCK) and CARDIOMEGALY.
Chagas Disease
Infection with the protozoan parasite TRYPANOSOMA CRUZI, a form of TRYPANOSOMIASIS endemic in Central and South America. It is named after the Brazilian physician Carlos Chagas, who discovered the parasite. Infection by the parasite (positive serologic result only) is distinguished from the clinical manifestations that develop years later, such as destruction of PARASYMPATHETIC GANGLIA; CHAGAS CARDIOMYOPATHY; and dysfunction of the ESOPHAGUS or COLON.
Trypanosoma
A genus of flagellate protozoans found in the BLOOD and LYMPH of vertebrates and invertebrates, both hosts being required to complete the life cycle.
Trypanosomiasis
Infection with protozoa of the genus TRYPANOSOMA.
Trypanosomiasis, African
A disease endemic among people and animals in Central Africa. It is caused by various species of trypanosomes, particularly T. gambiense and T. rhodesiense. Its second host is the TSETSE FLY. Involvement of the central nervous system produces African sleeping sickness. Nagana is a rapidly fatal trypanosomiasis of horses and other animals.
Trypanosomiasis, Bovine
Infection in cattle caused by various species of trypanosomes.
Tsetse Flies
Bloodsucking flies of the genus Glossina, found primarily in equatorial Africa. Several species are intermediate hosts of trypanosomes.
About the B56 Code Range
The ICD-10 code B56 and its subcodes are used to classify African trypanosomiasis, a parasitic disease caused by Trypanosoma species. These codes help identify the specific type or if the diagnosis is unspecified.
B56.0 covers Gambiense trypanosomiasis, commonly known as African trypanosomiasis, characterized by meningitis or encephalitis caused by Trypanosoma brucei gambiense. This form is a chronic condition primarily found in West and Central Africa. The detailed synonyms link common terms like "Trypanosomiasis with meningitis" and "Infection by Trypanosoma gambiense" to this code, assisting in accurate coding when these conditions are documented. B56.1 denotes Rhodesiense trypanosomiasis, an acute infection related to Trypanosoma brucei rhodesiense, often involving meningitis or encephalitis and predominantly found in East Africa. For cases where the type isn’t specified, B56.9 applies to African trypanosomiasis without a clear subtype diagnosis but may involve skin or neurological symptoms and infections by related Trypanosoma species. These codes guide medical professionals and coders in selecting the precise ICD-10 code for African trypanosomiasis based on clinical presentation and pathogen identification.
Questions About This Page
How many billable codes are in the B56 range?
Of the 4 codes in this range, 3 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the B56 range classify?
The range classifies african trypanosomiasis. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
