ICD-10-CM 2027
ICD-10 code for bladder trichomoniasis
From the official ICD-10-CM alphabetic index entry “Trichomoniasis › bladder”. Page updated September 29, 2026.
About coding bladder trichomoniasis
The ICD-10-CM code for bladder trichomoniasis is A59.03 (Trichomonal cystitis and urethritis).
Within A59.0 (urogenital trichomoniasis), A59.03 is specifically for Trichomonal cystitis and urethritis. Related codes cover unspecified (A59.00), Trichomonal vulvovaginitis (A59.01), Trichomonal prostatitis (A59.02) and other urogenital trichomoniasis (A59.09).
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 727 (Inflammation of the Male Reproductive System with MCC, relative weight 1.37), DRG 728 (Inflammation of the Male Reproductive System without MCC, relative weight 0.8224), DRG 742 (Uterine and Adnexa Procedures for Non-Malignancy with CC/MCC, relative weight 1.8456), DRG 743 (Uterine and Adnexa Procedures for Non-Malignancy without CC/MCC, relative weight 1.2974), DRG 757 (Infections, Female Reproductive System with MCC, relative weight 1.4649), DRG 758 (Infections, Female Reproductive System with CC, relative weight 0.9908) and 1 more, in MDC 12 (Diseases and Disorders of the Male Reproductive System) and MDC 13 (Diseases and Disorders of the Female Reproductive 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.
Common questions about bladder trichomoniasis ICD-10 codes
What is the ICD-10 code for bladder trichomoniasis?
- A59.03 — Trichomonal cystitis and urethritis.
Is A59.03 billable?
- Yes. A59.03 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can A59.03 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict A59.03 as a principal diagnosis.
Is A59.03 a CC or MCC?
- No. A59.03 is neither a CC nor an MCC under MS-DRG v44.0.