ICD-10-CM 2027
ICD-10 code for cestode infestation
From the official ICD-10-CM alphabetic index entry “Cestode infestation”. Page updated September 29, 2026.
About coding cestode infestation
The ICD-10-CM code for cestode infestation is B71.9 (Cestode infection, unspecified). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on B71.9.
Within B71, choose B71.9 (Cestode infection, unspecified) only when documentation doesn't support a more specific option: Hymenolepiasis (B71.0), Dipylidiasis (B71.1) and other specified cestode infections (B71.8).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 371 (Major Gastrointestinal Disorders and Peritoneal Infections with MCC, relative weight 1.7089), DRG 372 (Major Gastrointestinal Disorders and Peritoneal Infections with CC, relative weight 0.9964) and DRG 373 (Major Gastrointestinal Disorders and Peritoneal Infections without CC/MCC, relative weight 0.6941), in MDC 06 (Diseases and Disorders of the Digestive System), 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 cestode infestation codes (official index)
- specified type NEC B71.8 — Other specified cestode infections
Common questions about cestode infestation ICD-10 codes
What is the ICD-10 code for cestode infestation?
- B71.9 — Cestode infection, unspecified. More specific codes apply when the documentation supports them: B71.8.
Is B71.9 billable?
- Yes. B71.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can B71.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict B71.9 as a principal diagnosis.
Is B71.9 a CC or MCC?
- No. B71.9 is neither a CC nor an MCC under MS-DRG v44.0.