G9820 HCPCS Level II code: Documentation of a chlamydia screening test with proper follow-up
G9820 is the HCPCS code for “Documentation of a chlamydia screening test with proper follow-up” in CMS’s October 2026 release, in effect from Oct 1, 2026.
Official description
G9820Documentation of a chlamydia screening test with proper follow-up
Short description: Doc chlam scr test w/follow
HCPCS · United States
Medicare details
The indicators CMS publishes with G9820 in its October 2026 file. They describe Medicare’s handling, not another payer’s.
- Medicare coverage
- Carrier judgment
- Medicare pricing
- Service not separately priced by Part B (e.g., services not covered, bundled, used by Part A only, etc.)
- Type of service
- Medical care
- BETOS category
- Undefined codes
- Added
- Jan 1, 2017
Where G9820 sits
- 1G codesProcedures and professional services
- 2Active code G9820Documentation of a chlamydia screening test with proper follow-up
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 G9820 mean?
G9820 is the HCPCS code for “Documentation of a chlamydia screening test with proper follow-up” in CMS’s HCPCS Level II October 2026 release.
Does Medicare cover G9820?
CMS lists G9820’s Medicare coverage as “Carrier judgment” and its pricing as “Service not separately priced by Part B (e.g., services not covered, bundled, used by Part A only, etc.)”. 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 G9820
All G codesG9814Death occurring during the index acute care hospitalizationG9815Death did not occur during the index acute care hospitalizationG9816Death occurring after discharge from the hospital but within 30 days post procedureG9817Death did not occur after discharge from the hospital within 30 days post procedureG9818Documentation of sexual activityG9819Patients who use hospice services any time during the measurement periodG9821No documentation of a chlamydia screening test with proper follow-upG9822Patients who had an endometrial ablation procedure during the 12 months prior to the index date (exclusive of the index date)G9823Endometrial sampling or hysteroscopy with biopsy and results documented during the 12 months prior to the index date (exclusive of the index date) of the endometrial ablationG9824Endometrial sampling or hysteroscopy with biopsy and results not documented during the 12 months prior to the index date (exclusive of the index date) of the endometrial ablationG9825Her-2/neu negative or undocumented/unknownG9826Patient transferred to practice after initiation of chemotherapy