S3601 — Emergency stat laboratory charge for patient who is homebound or residing in a nursing facility
S3601 is a HCPCS Level II code for emergency stat laboratory charge for patient who is homebound or residing in a nursing facility. It belongs to the Temporary National Codes (Non-Medicare) section. Medicare does not pay it — see the coverage note below before you bill it.
Medicare coverage: Not payable by Medicare
Medicare does not pay this code. It may still be valid for another payer, but a Medicare claim carrying it will not be reimbursed.
From the coverage field of the CMS Alpha-Numeric HCPCS File, release 2026Q3-Jul. This states Medicare’s position on the code, not on your particular claim.
Physician fee schedule statusI
Not valid for Medicare purposes. Medicare uses another code.
Global period: XXX
Want the dollar amount for your locality? The fee calculator applies your GPCI and the current conversion factor.
The CMS record for S3601
- Long descriptor
- Emergency stat laboratory charge for patient who is homebound or residing in a nursing facility
- Short descriptor
- Stat lab home/nf
- Added
- January 1, 2002
- BETOS
- Z2
- Pricing indicator
- 00 — Not priced by Part B
The official wording. This is what the code means.
CMS's 28-character form, which is what shows up on a remittance advice.
When CMS introduced the code.
Berenson-Eggers Type of Service — CMS's own analytic grouping.
Service not separately priced by Part B — not covered, bundled into another service, or used by Part A only.
Codes adjacent to S3601
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If S3601 is not quite right, the correct code is very often within a few positions of it.
- S2404Repair, myelomeningocele in the fetus, procedure performed in utero
- S2405Repair of sacrococcygeal teratoma in the fetus, procedure performed in utero
- S2409Repair, congenital malformation of fetus, procedure performed in utero, not otherwise classified
- S2411Fetoscopic laser therapy for treatment of twin-to-twin transfusion syndrome
- S2900Surgical techniques requiring use of robotic surgical system (list separately in addition to code for primary procedure)
- S3000Diabetic indicator; retinal eye exam, dilated, bilateral
- S3005Performance measurement, evaluation of patient self assessment, depression
- S3600Stat laboratory request (situations other than s3601)
- 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
- S3645Hiv-1 antibody testing of oral mucosal transudate
- S3650Saliva test, hormone level; during menopause
- S3652Saliva test, hormone level; to assess preterm labor risk
- S3655Antisperm antibodies test (immunobead)
- S3708Gastrointestinal fat absorption study
- S3721Prostate cancer antigen 3 (pca3) testingterminated
Questions about S3601
What is HCPCS code S3601?
S3601 is a HCPCS Level II code for emergency stat laboratory charge for patient who is homebound or residing in a nursing facility. It sits in the Temporary National Codes (Non-Medicare) section.
Does Medicare cover S3601?
The CMS HCPCS file marks S3601 as "Not payable by Medicare". Medicare does not pay this code. It may still be valid for another payer, but a Medicare claim carrying it will not be reimbursed.
How is S3601 paid under the physician fee schedule?
S3601 carries PFS status code I. Not valid for Medicare purposes. Medicare uses another code.