ICD-10-CM 2027
ICD-10 code for medication prophylactic
From the official ICD-10-CM alphabetic index entry “Prophylactic › medication”. Page updated September 29, 2026.
About coding medication prophylactic
The ICD-10-CM code for medication prophylactic is Z79.899 (Other long term (current) drug therapy).
Within Z79.89, choose Z79.899 (Other long term (current) drug therapy) only when documentation doesn't support a more specific option: hormone replacement therapy (Z79.890) and long term (current) use of opiate analgesic (Z79.891).
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 949 (Aftercare with CC/MCC, relative weight 1.123) and DRG 950 (Aftercare without CC/MCC, relative weight 0.7664), 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 medication prophylactic ICD-10 codes
What is the ICD-10 code for medication prophylactic?
- Z79.899 — Other long term (current) drug therapy.
Is Z79.899 billable?
- Yes. Z79.899 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Z79.899 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict Z79.899 as a principal diagnosis.
Is Z79.899 a CC or MCC?
- No. Z79.899 is neither a CC nor an MCC under MS-DRG v44.0.