2019 ICD-10-CM Diagnosis Code B56.9

African trypanosomiasis, unspecified

    2016 2017 2018 2019 Billable/Specific Code
  • B56.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2019 edition of ICD-10-CM B56.9 became effective on October 1, 2018.
  • This is the American ICD-10-CM version of B56.9 - other international versions of ICD-10 B56.9 may differ.
Applicable To
  • Sleeping sickness NOS
The following code(s) above B56.9 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 B56.9:
  • A00-B99
    2019 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
    2019 ICD-10-CM Range B50-B64

    Protozoal diseases

    Type 1 Excludes
    • amebiasis (A06.-)
    • other protozoal intestinal diseases (A07.-)
    Protozoal diseases
Approximate Synonyms
  • African trypanosomiasis
  • African trypanosomiasis infection
  • Meningitis due to trypanosomiasis
  • Trypanosomiasis with meningitis
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.
ICD-10-CM B56.9 is grouped within Diagnostic Related Group(s) (MS-DRG v36.0):
  • 867 Other infectious and parasitic diseases diagnoses with mcc
  • 868 Other infectious and parasitic diseases diagnoses with cc
  • 869 Other infectious and parasitic diseases diagnoses without cc/mcc

Convert B56.9 to ICD-9-CM

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

Diagnosis Index entries containing back-references to B56.9:
  • African
  • Dementia (degenerative (primary)) (old age) (persisting) F03.90
    ICD-10-CM Diagnosis Code F03.90

    Unspecified dementia without behavioral disturbance

      2016 2017 2018 2019 Billable/Specific Code Adult Dx (15-124 years)
    Applicable To
    • Dementia NOS
  • Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute) G04.90
    ICD-10-CM Diagnosis Code G04.90

    Encephalitis and encephalomyelitis, unspecified

      2016 2017 2018 2019 Billable/Specific Code
    Applicable To
    • Ventriculitis (cerebral) NOS
    • in (due to)
      • African trypanosomiasis B56.9
  • Meningitis (basal) (basic) (brain) (cerebral) (cervical) (congestive) (diffuse) (hemorrhagic) (infantile) (membranous) (metastatic) (nonspecific) (pontine) (progressive) (simple) (spinal) (subacute) (sympathetic) (toxic) G03.9
    ICD-10-CM Diagnosis Code G03.9

    Meningitis, unspecified

      2016 2017 2018 2019 Billable/Specific Code
    Applicable To
    • Arachnoiditis (spinal) NOS
    • in (due to)
      • African trypanosomiasis B56.9
  • Sickness
  • Trypanosomiasis
    • African B56.9
    • where
      • African trypanosomiasis is prevalent B56.9

ICD-10-CM Codes Adjacent To B56.9
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
B57.32 Megacolon in Chagas' disease
B57.39 Other digestive system involvement in Chagas' disease
B57.4 Chagas' disease (chronic) with nervous system involvement

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