A59.03 Trichomonal cystitis and urethritis

Billable ICD-10-CM code, FY2026.

Applies from A59 Trichomoniasis

Excludes2 (not included here)

• intestinal trichomoniasis (A07.8)

MS-DRG index

Defines the logic of DRG(s) 727-728 in MDC 12.

Approximate ICD-9-CM (GEMs)

• 131.02 Trichomonal urethritis (approximate)

Code annotations containing back-references to A59.03

Back-references to A59.03

• Type 1 Excludes: N33 Bladder disorders in diseases classified elsewhere ("trichomonal cystitis (A59.03)")
• Type 1 Excludes: N37 Urethral disorders in diseases classified elsewhere ("trichomonal infection (A59.03)")

Back-references to A59

• Type 2 Excludes: N34 Urethritis and urethral syndrome ("urethritis in diseases with a predominantly sexual mode of transmission (A50-A64)")

Diagnosis Index entries for A59.03

• Cystitis (exudative) (hemorrhagic) (septic) (suppurative) › trichomonal
• Infection, infected, infective (opportunistic) › Trichomonas › urethra
• Trichomoniasis › bladder
• Trichomoniasis › urethra
• Urethritis (anterior) (posterior) › trichomonal or due to Trichomonas (vaginalis)

Nearby codes

• A59 Trichomoniasis
• A59.0 Urogenital trichomoniasis
• A59.00 Urogenital trichomoniasis, unspecified
• A59.01 Trichomonal vulvovaginitis
• A59.02 Trichomonal prostatitis
• A59.03 Trichomonal cystitis and urethritis (this code)
• A59.09 Other urogenital trichomoniasis
• A59.8 Trichomoniasis of other sites
• A59.9 Trichomoniasis, unspecified