Modifiers JW and JZ for Use with Drugs and Biologicals in Single-Use Containers

CMS has updated their Frequently Asked Questions (FAQs) for using the JW and JZ modifiers for Medicare Part B discarded drugs and biologicals from single-dose containers or single-use packages.

  • If you didn’t discard any of the drug: Report the JZ modifier on the claim starting no later than July 1, 2023
  • If you discarded any of the drug, continue to:
    • Report the JW modifier on the claim
    • Document the discarded amount in the patient’s medical record

CMS will use the JW and JZ modifiers to calculate discarded drug refunds.


CMS Discarded Drugs and Biologicals - JW Modifier and JZ Modifier Policy Frequently Asked Questions (FAQs)

Last Updated Jan 31 , 2023