HCPCS Level II · Temporary national codes (non-Medicare)
S3645Hiv-1 antibody testing of oral mucosal transudate
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Source: CMS HCPCS quarterly update, October 2026. Page updated September 29, 2026.
About S3645
S3645 is an HCPCS Level II code in the S series (temporary national codes (non-Medicare)), describing hiv-1 antibody testing of oral mucosal transudate.
It was added to HCPCS effective 01/01/2000.
Its Medicare coverage code is "I", meaning it is not payable by Medicare (another code or method is used).
Details
- Short description
- Hiv-1 antibody testing of or
- Date added
- 01/01/2000
- Action effective
- 01/01/2000
- BETOS
- Z2
Related S36xx codes
- S3600Stat laboratory request (situations other than s3601)
- S3601Emergency stat laboratory charge for patient who is homebound or residing in a nursing facility
- S3620Newborn metabolic screening panel, includes test kit, postage and the laboratory tests specified by the state for inclusion in this panel (e.g., galactose; hemoglobin, electrophoresis; hydroxyprogesterone, 17-d; phenylalanine (pku); and thyroxine, total)
- S3630Eosinophil count, blood, direct
- S3650Saliva test, hormone level; during menopause
- S3652Saliva test, hormone level; to assess preterm labor risk
- S3655Antisperm antibodies test (immunobead)
Common questions about S3645
Is HCPCS S3645 still valid?
- Yes. S3645 is active in the CMS October 2026 HCPCS file.
Does Medicare cover S3645?
- Its coverage code is "I": it is not payable by Medicare (another code or method is used). Check the local coverage determination for your region.