ICD-10-CM 2027
ICD-10 code for insulin pump fitting
From the official ICD-10-CM alphabetic index entry “Fitting (and adjustment) (of) › insulin pump”. Page updated September 29, 2026.
About coding insulin pump fitting
The ICD-10-CM code for insulin pump fitting is Z46.81 (Encounter for fitting and adjustment of insulin pump).
Within Z46.8 (encounter for fitting and adjustment of other specified devices), Z46.81 is specifically for encounter for fitting and adjustment of insulin pump. Related codes cover non-vascular catheter (Z46.82) and other specified devices (Z46.89).
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 insulin pump fitting ICD-10 codes
What is the ICD-10 code for insulin pump fitting?
- Z46.81 — Encounter for fitting and adjustment of insulin pump.
Is Z46.81 billable?
- Yes. Z46.81 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Z46.81 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 Z46.81 a CC or MCC?
- No. Z46.81 is neither a CC nor an MCC under MS-DRG v44.0.