`S3645` Hiv-1 antibody testing of or

Hiv-1 antibody testing of oral mucosal transudate

Medicare coverage: Not payable by Medicare
Status: active (October 2026 file)

Medicare pricing for S3645

Physician Fee Schedule (CY 2026, RVU26D)

Status I: not valid for Medicare (Medicare uses another code).

Payer policies and prior authorization for S3645

Payer coverage policies that name S3645

S3645 appears in 3 coverage policies from Aetna, BlueCross BlueShield of South Carolina, Premera Blue Cross.

Payer	Policy	Role in policy	Reviewed	Document
Aetna	HIV Testing (0542)	covered if criteria are met	Aug 28, 2026	payer document
BlueCross BlueShield of South Carolina	Human Immunodeficiency Virus Testing (CAM 282)	listed, no stance	Apr 1, 2026	payer document
Premera Blue Cross	Preventive Care HIV screening	covered if criteria are met	Sep 21, 2026	payer document

Medicaid fee-for-service

Prior authorization required or conditional in IN.

ND: $0.00 (physician), effective Aug 1, 2026

From payers' published prior-auth lists, coverage policies and state Medicaid fee schedules, updated Oct 16, 2026. The role is what the policy's own code table or text says about the code. Not a guarantee of coverage or payment; verify with the payer. CPT® is a registered trademark of the American Medical Association.

S3645 Hiv-1 antibody testing of or