Reader Question: Know The Facts on JZ Modifier Usage
Question: Even though modifier JZ was introduced last January, we’re a little confused about it. How should we use it, and when did Medicare actually start to monitor its use?
Texas Subscriber
Answer: On Jan. 1, 2023, the Centers for Medicare & Medicaid Services (CMS) introduced modifier JZ (Zero drug amount discarded/not administered to any patient). Unlike modifier JW (Drug amount discarded/not administered to any patient), which you use when the provider administers part of a single-dose container and discards the rest, Medicare instructed you to use the JZ modifier when the entire container is used as the...
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