ICD-10-CM 2027
ICD-10 code for fitting or adjustment colostomy
Encounter for fitting and adjustment of other specified devices
From the official ICD-10-CM alphabetic index entry “Colostomy › fitting or adjustment”. Page updated September 29, 2026.
About coding fitting or adjustment colostomy
The ICD-10-CM code for fitting or adjustment colostomy is Z46.89 (Encounter for fitting and adjustment of other specified devices).
Within Z46.8, choose Z46.89 (other specified devices) only when documentation doesn't support a more specific option: insulin pump (Z46.81) and non-vascular catheter (Z46.82).
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 951 (Other Factors Influencing Health Status, relative weight 0.5577), in MDC 23 (Factors Influencing Health Status and Other Contacts with Health Services), 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 fitting or adjustment colostomy ICD-10 codes
What is the ICD-10 code for fitting or adjustment colostomy?
- Z46.89 — Encounter for fitting and adjustment of other specified devices.
Is Z46.89 billable?
- Yes. Z46.89 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Z46.89 be used as a principal diagnosis?
- No. It is not acceptable as the principal diagnosis for an inpatient stay; it may be reported as a secondary diagnosis.
Is Z46.89 a CC or MCC?
- No. Z46.89 is neither a CC nor an MCC under MS-DRG v44.0.