HCPCS Level II modifier
Modifier JZ
Modifier JZ is a HCPCS Level II modifier. CMS describes it as: Zero drug amount discarded/not administered to any patient.
Source: CMS HCPCS Level II, October 2026 file dated September 23, 2026. Publisher page
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- Modifier
- JZ
- Type
- HCPCS Level II modifier, maintained by CMS
- CMS description
- Zero drug amount discarded/not administered to any patient
- Claim form
- CMS-1500 item 24D, up to four modifiers per line. 837P SV101-3 to SV101-6.
- Guidance
- CMS HCPCS quarterly update
Drug waste and 340B
Related modifiers
- JWDrug amount discarded/not administered to any patient
- JGDrug or biological acquired with 340b drug pricing program discount, reported for informational purposes
- TBDrug or biological acquired with 340b drug pricing program discount, reported for informational purposes
- K0Lower extremity prosthesis functional level 0 - does not have the ability or potential to ambulate or transfer safely with or without assistance and a prosthesis does not enhance their quality of life or mobility.
- K1Lower extremity prosthesis functional level 1 - has the ability or potential to use a prosthesis for transfers or ambulation on level surfaces at fixed cadence. typical of the limited and unlimited household ambulator.
- JLThree month supply of drug or biological
- K2Lower extremity prosthesis functional level 2 - has the ability or potential for ambulation with the ability to traverse low level environmental barriers such as curbs, stairs or uneven surfaces. typical of the limited community ambulator.
- JKOne month supply or less of drug or biological
Related pages
Questions
What does modifier JZ mean?
Modifier JZ is a HCPCS Level II modifier. CMS describes it as: Zero drug amount discarded/not administered to any patient.
Is modifier JZ a CPT or a HCPCS modifier?
JZ is a HCPCS Level II modifier from the CMS quarterly HCPCS file. Two-digit numeric modifiers, such as 25 or 59, are CPT modifiers.
Where does modifier JZ go on a claim?
On the CMS-1500 it goes in item 24D next to the procedure code. Each line holds up to four modifiers. On an 837P it goes in SV101-3 to SV101-6.
What denial comes back when a modifier is wrong?
A missing or mismatched modifier often comes back as CARC 4. A modifier that was not valid on the date of service comes back as CARC 182. A bundling edit the modifier should have bypassed comes back as CARC 97 or 236.