Z93.50 Unspecified cystostomy status

Billable ICD-10-CM code, FY2026. Exempt from present-on-admission (POA) reporting.

Applies from Z93 Artificial opening status

Excludes1 (never code together)

• artificial openings requiring attention or management (Z43.-)
• complications of external stoma (J95.0-, K94.-, N99.5-)

Risk adjustment (HCC)

• CMS-HCC V28: HCC 463 — Artificial Openings for Feeding or Elimination
• CMS-HCC V22: HCC 188 — Artificial Openings for Feeding or Elimination
• ESRD V24: HCC 188

MS-DRG index

Defines the logic of DRG(s) 951 in MDC 23.

Approximate ICD-9-CM (GEMs)

• V44.50 Cystostomy, unspecified

Medicare Code Edits (MCE v43.1 (April 2026))

• Unacceptable principal diagnosis: These codes describe a circumstance which influences care but is not a current illness or injury, or capture only an underlying condition, and are unacceptable as principal diagnosis.

Code annotations containing back-references to Z93.50

Back-references to Z93

• Use Additional: L24.B Irritant contact dermatitis related to stoma or fistula ("code to identify any artificial opening status (Z93.-), if applicable, for contact dermatitis related to stoma secretions")
• Type 2 Excludes: Z43.1 Encounter for attention to gastrostomy ("artificial opening status only, without need for care (Z93.-)")
• Type 2 Excludes: Z78 Other specified health status ("postprocedural status (Z93-Z99)")

Diagnosis Index entries for Z93.50

• Artificial › opening status (functioning) (without complication) › cystostomy
• Cystostomy › status
• Status (post) › cystostomy

Nearby codes

• Z93.1 Gastrostomy status
• Z93.2 Ileostomy status
• Z93.3 Colostomy status
• Z93.4 Other artificial openings of gastrointestinal tract status
• Z93.5 Cystostomy status
• Z93.50 Unspecified cystostomy status (this code)
• Z93.51 Cutaneous-vesicostomy status
• Z93.52 Appendico-vesicostomy status
• Z93.59 Other cystostomy status
• Z93.6 Other artificial openings of urinary tract status
• Z93.8 Other artificial opening status