HG HCPCS Level II modifier: Opioid addiction treatment program
HG is a HCPCS Level II modifier: “Opioid addiction treatment program.” It adds this detail to the code it is reported with.
Official description
HGOpioid addiction treatment program
Short description: Opioid addiction tx program
HCPCS · United States
Medicare details
The indicators CMS publishes with HG in its October 2026 file. They describe Medicare’s handling, not another payer’s.
- Medicare coverage
- Not payable by Medicare
- Added
- Jan 1, 2003
Where HG sits
- 1GroupHCPCS modifiers
- 2Modifier HGOpioid addiction treatment program
Source and release
- Data release
- HCPCS Level II · October 2026
- Effective date
- Oct 1, 2026
- Publisher
- CMS
This page is built from the HCPCS Level II catalog that Vero Codes reads when it suggests codes: Centers for Medicare & Medicaid Services’s October 2026 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does HCPCS code HG mean?
HG is the HCPCS code for “Opioid addiction treatment program” in CMS’s HCPCS Level II October 2026 release.
Where is HG in the HCPCS Level II list?
HG is listed under Modifiers.
Does Medicare cover HG?
CMS lists HG’s Medicare coverage as “Not payable by Medicare”. Coverage and payment still depend on the patient, the setting, the documentation and the payer.
Which HCPCS Level II release does this page use?
It uses CMS’s October 2026 release, in effect from Oct 1, 2026 to Dec 31, 2026. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.
Codes beside HG
All modifiersHAChild/adolescent programHBAdult program, non geriatricHCAdult program, geriatricHDPregnant/parenting women's programHEMental health programHFSubstance abuse programHHIntegrated mental health/substance abuse programHIIntegrated mental health and intellectual disability/developmental disabilities programHJEmployee assistance programHKSpecialized mental health programs for high-risk populationsHLInternHMLess than bachelor degree level