S9377 — Home infusion therapy, hydration therapy; more than three liters per day, administrative services, professional pharmacy services, care coordination, and all necessary supplies (drugs and nursing visits coded separately), per diem
S9377 is a HCPCS Level II code for home infusion therapy, hydration therapy; more than three liters per day, administrative services, professional pharmacy services, care coordination, and all necessary supplies (drugs and nursing visits coded separately), per diem. 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 S9377
- Long descriptor
- Home infusion therapy, hydration therapy; more than three liters per day, administrative services, professional pharmacy services, care coordination, and all necessary supplies (drugs and nursing visits coded separately), per diem
- Short descriptor
- Hit hydra over 3l diem
- 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 S9377
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If S9377 is not quite right, the correct code is very often within a few positions of it.
- S9367Home infusion therapy, total parenteral nutrition (tpn); more than two liters but no more than three liters per day, administrative services, professional pharmacy services, care coordination, and all necessary supplies and equipment including standard tpn formula (lipids, specialty amino acid formulas, drugs other than in standard formula and nursing visits coded separately), per diem
- S9368Home infusion therapy, total parenteral nutrition (tpn); more than three liters per day, administrative services, professional pharmacy services, care coordination, and all necessary supplies and equipment including standard tpn formula (lipids, specialty amino acid formulas, drugs other than in standard formula and nursing visits coded separately), per diem
- S9370Home therapy, intermittent anti-emetic injection therapy; administrative services, professional pharmacy services, care coordination, and all necessary supplies and equipment (drugs and nursing visits coded separately), per diem
- S9372Home therapy; intermittent anticoagulant injection therapy (e.g., heparin); administrative services, professional pharmacy services, care coordination, and all necessary supplies and equipment (drugs and nursing visits coded separately), per diem (do not use this code for flushing of infusion devices with heparin to maintain patency)
- S9373Home infusion therapy, hydration therapy; administrative services, professional pharmacy services, care coordination, and all necessary supplies and equipment (drugs and nursing visits coded separately), per diem (do not use with hydration therapy codes s9374-s9377 using daily volume scales)
- S9374Home infusion therapy, hydration therapy; one liter per day, administrative services, professional pharmacy services, care coordination, and all necessary supplies and equipment (drugs and nursing visits coded separately), per diem
- S9375Home infusion therapy, hydration therapy; more than one liter but no more than two liters per day, administrative services, professional pharmacy services, care coordination, and all necessary supplies and equipment (drugs and nursing visits coded separately), per diem
- S9376Home infusion therapy, hydration therapy; more than two liters but no more than three liters per day, administrative services, professional pharmacy services, care coordination, and all necessary supplies and equipment (drugs and nursing visits coded separately), per diem
- S9379Home infusion therapy, infusion therapy, not otherwise classified; administrative services, professional pharmacy services, care coordination, and all necessary supplies and equipment (drugs and nursing visits coded separately), per diem
- S9381Delivery or service to high risk areas requiring escort or extra protection, per visit
- S9401Anticoagulation clinic, inclusive of all services except laboratory tests, per session
- S9430Pharmacy compounding and dispensing services
- S9432Medical foods for non-inborn errors of metabolism
- S9433Medical food nutritionally complete, administered orally, providing 100% of nutritional intake
- S9434Modified solid food supplements for inborn errors of metabolism
- S9435Medical foods for inborn errors of metabolism
Questions about S9377
What is HCPCS code S9377?
S9377 is a HCPCS Level II code for home infusion therapy, hydration therapy; more than three liters per day, administrative services, professional pharmacy services, care coordination, and all necessary supplies (drugs and nursing visits coded separately), per diem. It sits in the Temporary National Codes (Non-Medicare) section.
Does Medicare cover S9377?
The CMS HCPCS file marks S9377 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 S9377 paid under the physician fee schedule?
S9377 carries PFS status code I. Not valid for Medicare purposes. Medicare uses another code.