HCPCS Level II modifier
Modifier JG
Modifier JG is a HCPCS Level II modifier. CMS describes it as: Drug or biological acquired with 340b drug pricing program discount, reported for informational purposes.
Source: CMS HCPCS Level II, October 2026 file dated September 23, 2026. Publisher page
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- Modifier
- JG
- Type
- HCPCS Level II modifier, maintained by CMS
- CMS description
- Drug or biological acquired with 340b drug pricing program discount, reported for informational purposes
- 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
- JZZero drug amount discarded/not administered to any patient
- TBDrug or biological acquired with 340b drug pricing program discount, reported for informational purposes
- JKOne month supply or less of drug or biological
- JFCompounded drug
- JLThree month supply of drug or biological
- JEAdministered via dialysate
- JDSkin substitute not used as a graft
Related pages
Questions
What does modifier JG mean?
Modifier JG is a HCPCS Level II modifier. CMS describes it as: Drug or biological acquired with 340b drug pricing program discount, reported for informational purposes.
Is modifier JG a CPT or a HCPCS modifier?
JG 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 JG 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.