ICD-10-CM 2027
ICD-10 code for Trichomonas pruritus
From the official ICD-10-CM alphabetic index entry “Pruritus, pruritic (essential) › Trichomonas”. Page updated September 29, 2026.
About coding Trichomonas pruritus
The ICD-10-CM code for Trichomonas pruritus is A59.9 (Trichomoniasis, unspecified).
Within A59, choose A59.9 (unspecified) only when documentation doesn't support a more specific option: urogenital trichomoniasis (A59.0) and of other sites (A59.8).
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 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.
Common questions about Trichomonas pruritus ICD-10 codes
What is the ICD-10 code for Trichomonas pruritus?
- A59.9 — Trichomoniasis, unspecified.
Is A59.9 billable?
- Yes. A59.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can A59.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict A59.9 as a principal diagnosis.
Is A59.9 a CC or MCC?
- No. A59.9 is neither a CC nor an MCC under MS-DRG v44.0.