2020 ICD-10-CM Diagnosis Code B56

African trypanosomiasis

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • B56 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2020 edition of ICD-10-CM B56 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of B56 - other international versions of ICD-10 B56 may differ.
The following code(s) above B56 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to B56:
  • A00-B99
    2020 ICD-10-CM Range A00-B99

    Certain infectious and parasitic diseases

    Includes
    • diseases generally recognized as communicable or transmissible
    Type 1 Excludes
    • certain localized infections - see body system-related chapters
    Type 2 Excludes
    • carrier or suspected carrier of infectious disease (Z22.-)
    • infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
    • infectious and parasitic diseases specific to the perinatal period (P35-P39)
    • influenza and other acute respiratory infections (J00-J22)
    Use Additional
    • code to identify resistance to antimicrobial drugs (Z16.-)
    Certain infectious and parasitic diseases
  • B50-B64
    2020 ICD-10-CM Range B50-B64

    Protozoal diseases

    Type 1 Excludes
    • amebiasis (A06.-)
    • other protozoal intestinal diseases (A07.-)
    Protozoal diseases
Clinical Information
  • 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.
  • A parasitic disorder caused by protozoa of the trypanosoma brucei species. It is transmitted by flies and is endemic in various regions of sub-saharan africa. Signs and symptoms include fever, joint pain, headache, and significant swelling of the lymph nodes. If left untreated, the parasitic infection causes anemia, heart, kidney, and endocrine failure, and neurologic damage. Subsequently patients develop confusion, disruption of the sleep cycle, and mental deterioration. The infection may lead to coma and death.
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
Code annotations containing back-references to B56:
  • Code First: F02
    , G02
    ICD-10-CM Diagnosis Code F02

    Dementia in other diseases classified elsewhere

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Code First
    • the underlying physiological condition, such as:
    • Alzheimer's (G30.-)
    • cerebral lipidosis (E75.4)
    • Creutzfeldt-Jakob disease (A81.0-)
    • dementia with Lewy bodies (G31.83)
    • dementia with Parkinsonism (G31.83)
    • epilepsy and recurrent seizures (G40.-)
    • frontotemporal dementia (G31.09)
    • hepatolenticular degeneration (E83.0)
    • human immunodeficiency virus [HIV] disease (B20)
    • Huntington's disease (G10)
    • hypercalcemia (E83.52)
    • hypothyroidism, acquired (E00-E03.-)
    • intoxications (T36-T65)
    • Jakob-Creutzfeldt disease (A81.0-)
    • multiple sclerosis (G35)
    • neurosyphilis (A52.17)
    • niacin deficiency [pellagra] (E52)
    • Parkinson's disease (G20)
    • Pick's disease (G31.01)
    • polyarteritis nodosa (M30.0)
    • prion disease (A81.9)
    • systemic lupus erythematosus (M32.-)
    • traumatic brain injury (S06.-)
    • trypanosomiasis (B56.-, B57.-)
    • vitamin B deficiency (E53.8)
    Includes
    • Major neurocognitive disorder in other diseases classified elsewhere
    Type 2 Excludes
    • dementia in alcohol and psychoactive substance disorders (F10-F19, with .17, .27, .97)
    • vascular dementia (F01.5-)
    ICD-10-CM Diagnosis Code G02

    Meningitis in other infectious and parasitic diseases classified elsewhere

      2016 2017 2018 2019 2020 Billable/Specific Code Manifestation Code
    Code First
    • underlying disease, such as:
    • African trypanosomiasis (B56.-)
    • poliovirus infection (A80.-)
    Type 1 Excludes
    • candidal meningitis (B37.5)
    • coccidioidomycosis meningitis (B38.4)
    • cryptococcal meningitis (B45.1)
    • herpesviral [herpes simplex] meningitis (B00.3)
    • infectious mononucleosis complicated by meningitis (B27.- with fourth character 2)
    • measles complicated by meningitis (B05.1)
    • meningoencephalitis and meningomyelitis in other infectious and parasitic diseases classified elsewhere (G05)
    • mumps meningitis (B26.1)
    • rubella meningitis (B06.02)
    • varicella [chickenpox] meningitis (B01.0)
    • zoster meningitis (B02.1)
ICD-10-CM Codes Adjacent To B56
B53 Other specified malaria
B53.0 Plasmodium ovale malaria
B53.1 Malaria due to simian plasmodia
B53.8 Other malaria, not elsewhere classified
B54 Unspecified malaria
B55 Leishmaniasis
B55.0 Visceral leishmaniasis
B55.1 Cutaneous leishmaniasis
B55.2 Mucocutaneous leishmaniasis
B55.9 Leishmaniasis, unspecified
B56 African trypanosomiasis
B56.0 Gambiense trypanosomiasis
B56.1 Rhodesiense trypanosomiasis
B56.9 African trypanosomiasis, unspecified
B57 Chagas' disease
B57.0 Acute Chagas' disease with heart involvement
B57.1 Acute Chagas' disease without heart involvement
B57.2 Chagas' disease (chronic) with heart involvement
B57.3 Chagas' disease (chronic) with digestive system involvement
B57.30 Chagas' disease with digestive system involvement, unspecified
B57.31 Megaesophagus in Chagas' disease

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.