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ICD-10-CM 2027

ICD-10 code for sleeping African sickness

B56.9

African trypanosomiasis, unspecified

✓ Billable / specificCC — complication/comorbidity

From the official ICD-10-CM alphabetic index entry “Sickness › sleeping (African)”. Page updated September 29, 2026.

About coding sleeping African sickness

The ICD-10-CM code for sleeping African sickness is B56.9 (African trypanosomiasis, unspecified). The official index lists 7 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on B56.9.

Within B56, choose B56.9 (unspecified) only when documentation doesn't support a more specific option: Gambiense trypanosomiasis (B56.0) and Rhodesiense trypanosomiasis (B56.1).

As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.

In MS-DRG v44.0, it is part of the grouping logic for DRG 867 (Other Infectious and Parasitic Diseases Diagnoses with MCC, relative weight 2.1859), DRG 868 (Other Infectious and Parasitic Diseases Diagnoses with CC, relative weight 1.0235) and DRG 869 (Other Infectious and Parasitic Diseases Diagnoses without CC/MCC, relative weight 0.6787), in MDC 18 (Infectious and Parasitic Diseases, Systemic or Unspecified Sites), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

More specific sleeping African sickness codes (official index)

  • by Trypanosoma B56.9 — African trypanosomiasis, unspecified
  • brucei
  • gambiense B56.0 — Gambiense trypanosomiasis
  • rhodesiense B56.1 — Rhodesiense trypanosomiasis
  • East African B56.1 — Rhodesiense trypanosomiasis
  • Gambian B56.0 — Gambiense trypanosomiasis
  • Rhodesian B56.1 — Rhodesiense trypanosomiasis
  • West African B56.0 — Gambiense trypanosomiasis

Common questions about sleeping African sickness ICD-10 codes

What is the ICD-10 code for sleeping African sickness?

B56.9 — African trypanosomiasis, unspecified. More specific codes apply when the documentation supports them: B56.9, B56.0, B56.1, B56.1 and others below.

What is the ICD-10 code for east african sleeping african sickness?

B56.1 — Rhodesiense trypanosomiasis.

What is the ICD-10 code for gambian sleeping african sickness?

B56.0 — Gambiense trypanosomiasis.

What is the ICD-10 code for rhodesian sleeping african sickness?

B56.1 — Rhodesiense trypanosomiasis.

What is the ICD-10 code for west african sleeping african sickness?

B56.0 — Gambiense trypanosomiasis.

Is B56.9 billable?

Yes. B56.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can B56.9 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict B56.9 as a principal diagnosis.

Is B56.9 a CC or MCC?

B56.9 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.