ICD-10-CM 2027
ICD-10 code for anticoagulants long-term drug therapy
From the official ICD-10-CM alphabetic index entry “Long-term (current) (prophylactic) drug therapy (use of) › anticoagulants”. Page updated September 29, 2026.
About coding anticoagulants long-term drug therapy
The ICD-10-CM code for anticoagulants long-term drug therapy is Z79.01 (Long term (current) use of anticoagulants).
Within Z79.0 (long term (current) use of anticoagulants and antithrombotics/antiplatelets), Z79.01 is specifically for long term (current) use of anticoagulants. Related codes cover antithrombotics/antiplatelets (Z79.02).
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 anticoagulants long-term drug therapy ICD-10 codes
What is the ICD-10 code for anticoagulants long-term drug therapy?
- Z79.01 — Long term (current) use of anticoagulants.
Is Z79.01 billable?
- Yes. Z79.01 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Z79.01 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict Z79.01 as a principal diagnosis.
Is Z79.01 a CC or MCC?
- No. Z79.01 is neither a CC nor an MCC under MS-DRG v44.0.