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    v1.0.30
    OpenPayerBilling CodesTemporary National Codes (Non-Medicare)HCPCS hcpcs-level-ii-s9366-home-tpn-1-2l-per-day-home-infusion
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    HCPCS Level II S9366: Home Infusion TPN, 1–2 L/day

    HCPCS Level II code S9366 describes a per diem home infusion therapy service for total parenteral nutrition (TPN) delivering more than one liter but no more than two liters per day, covering administrative and professional pharmacy services, care coordination, and all necessary supplies and equipment including standard TPN formula (lipids, specialty amino acid formulas) with drugs and nursing visits billed separately; service type: home infusion therapy, professional pharmacy and care coordination, typical site of service: patient's home.

    For related coverage guidance, see recent payer policy updates: Ambulance and Medical Transport Services (Ground, Air and Water) Corporate Medical Policy, Emergency Air/Water Ambulance Services Medical Guideline, Non-Emergent Ambulance Services.

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    Clinical & Coding Specifications

    Clinical Context

    A 58-year-old patient with short bowel syndrome and chronic intestinal failure is discharged from hospital to home with a peripherally inserted central catheter (PICC) for home total parenteral nutrition (TPN). The patient requires between 1.1 and 1.8 liters of compounded TPN daily because of inadequate enteral absorption and persistent malnutrition. Home infusion pharmacy provides daily per diem administrative and professional services, care coordination, compounding of a standard TPN formula including lipids and specialty amino acid formulations, and delivery of required supplies and equipment. Nursing visits for catheter care and any separately billable drug infusions are coded and billed separately. The clinical workflow includes physician orders for TPN, home infusion pharmacy intake and benefit verification, prior authorization if required, pharmacist compounding and accuracy checks, courier delivery of TPN and supplies, daily remote or in-person monitoring and care coordination, and periodic clinic follow-up to adjust macronutrients and micronutrients based on laboratory results and weight trends.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    96365Intravenous infusion, therapeutic, prophylactic, or diagnostic; initial, up to 1 hourMay be used for separately billable intravenous medication infusions administered in addition to the TPN per diem when applicable.
    36561Insertion of central venous catheter, non-tunneled centrally inserted central venous catheter; age 5 years or olderUsed when central venous access is placed for administration of home TPN prior to initiation of the per diem service.
    36568Replacement, complete, of tunneled central venous catheter, without subcutaneous port or pumpUsed when catheter replacement or revision is required for ongoing TPN access and billed separately from the TPN per diem.
    36415Collection of venous blood by venipunctureUsed for laboratory monitoring required to adjust TPN composition; commonly performed prior to or during TPN management.
    97802Medical nutrition therapy; initial assessment and intervention, individual, face-to-face, 15 minutesUsed when a registered dietitian performs assessment and initial TPN prescription guidance as part of nutritional management.
    96523Irrigation and/or debridement of central vascular access device when performed for catheter-related infection (example)Used for catheter-related interventions or flushes that are separately billable from the per diem when clinically required.

    Related Modifiers

    11 rows

    ModifierDescriptionWhen to Use
    26Modifier 26 (Professional Component) identifies and bills only the professional portion of a split service — the physician’s interpretation, report, and medical judgment — when the technical…- Use CPT Modifier -26 when you are billing only the professional component (PC) of a split‑bill eligible service—i.e., you performed the physician interpretation, medical judgment and prepared a…
    32Modifier 32 (Mandated Services) indicates that a CPT-coded service was required by a third party—such as an insurer, school, state agency, or court. The AMA defines it as denoting services mandated…- Use Modifier 32 when a service or procedure was explicitly mandated by a third party (for example an insurer requiring a second opinion, a school requiring a sports physical, a state agency or…
    51Modifier –51 (Multiple Procedures) is used when the same provider performs multiple procedures in the same session to identify secondary, non‑exempt procedures and indicate payment reduction logic…- Use modifier -51 when the same provider performs multiple distinct procedures during the same patient encounter: report the highest‑valued procedure first (no modifier) and append -51 to…
    52Modifier ‑52 (Reduced Services) indicates that a service or procedure was partially reduced or omitted at the provider’s discretion, allowing reporting of the basic procedure number with a qualifier…- Use modifier -52 when a physician or qualified health professional electively reduces or omits part of a procedure or service (for example, performing fewer required views or omitting a portion of…
    53Modifier 53 (Discontinued Procedure) signals that a surgical or diagnostic service was begun by the physician but terminated because of extenuating circumstances that threatened the patient’s…- Use modifier -53 when a physician/qualified healthcare professional has started a surgical or diagnostic procedure (e.g., anesthesia administered, incision or scope insertion) and then discontinues…
    59Modifier 59 indicates a distinct procedural service when two procedures that are not normally billed together are clinically and procedurally separate. The CPT definition (as reiterated by CMS)…- Use modifier -59 to report a distinct procedural service when documentation supports that the procedure reported is not normally billed together with another service on the same day because of a…
    62Modifier 62 indicates that two surgeons function as co‑surgeons, each performing distinct parts of the same primary surgical procedure. It is appended to the primary procedure code (and any…- Use modifier -62 when two surgeons act as co‑surgeons (both primary surgeons) on a single definitive primary procedure, each performing distinct parts of the same surgical procedure (append -62 to…
    76Modifier -76, Repeat Procedure or Service by Same Physician or Other Qualified Health Care Professional, is appended when the same provider performs an identical, medically necessary procedure or…- Use modifier -76 when the same physician or other qualified health care professional performs an identical procedure or service a second (or subsequent) time on the same date of service and the…
    78CPT modifier -78 indicates an unplanned, related return to the operating or procedure room by the same provider during the global postoperative period. It is appended when treatment for a…- Use modifier -78 when an unplanned, related complication during the original procedure’s global postoperative period requires the patient to return to a formal operating or procedure room and the…
    80CPT® Modifier 80 (Assistant Surgeon) is appended to a surgical CPT code when a physician (MD or DO) provides full, continuous assistance throughout the operative procedure. It is intended only for…- Use CPT Modifier -80 when a physician (MD or DO) serves as an assistant surgeon and provides full, continuous assistance throughout the entire operative procedure; append -80 to the surgical CPT…

    Showing 1–10 of 11

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    207RC0000X
    291900000X
    2084N0402X
    207QA0505X
    1835I0206X
    364SP0812X
    2251E1300X
    146D00000X

    Related Payer Policy Updates

    Specialty: Emergency & Medical Transportation1 / 3

    10 rows

    PolicyPayerEffective Date
    Ambulance and Medical Transport Services (Ground, Air and Water) Corporate Medical Policybcbsvermont2026-10-01
    Emergency Air/Water Ambulance Services Medical GuidelineWPS Health Insurance2026-10-01
    Non-Emergent Ambulance ServicesConnectiCare2026-09-11
    Fixed Wing Air Ambulance TransportCigna2026-08-15
    Air AmbulanceAmbetter Georgia2026-08-01
    Ambulance Services (for New Mexico Only)UnitedHealthcare2026-08-01
    Ambulance Services (for Tennessee Only)UnitedHealthcare2026-08-01
    Clinical Policy: Air AmbulanceAmbetter Nevada2026-08-01
    Air AmbulanceCentene2026-08-01
    Clinical Policy: Air AmbulanceArizona Complete Health2026-08-01

    Related Codes

    HCPCS-LEVEL-II-S2152-SOLID-ORGAN-TRANSPLANTATION-GLOBAL-CARE

    HCPCS Level II S2152: Solid Organ Procurement and Transplantation

    HCPCS-LEVEL-II-S2266-INDUCED-ABORTION-29-TO-31-WEEKS

    HCPCS Level II S2266: Induced Abortion, 29 to 31 Weeks

    HCPCS-LEVEL-II-S3630-EOSINOPHIL-COUNT-BLOOD-DIRECT

    HCPCS Level II S3630: Eosinophil Count, Blood, Direct

    HCPCS-LEVEL-II-S4017-INCOMPLETE-ART-CYCLE-CANCELLED-PRIOR-TO-STIMULATION

    HCPCS Level II S4017: Incomplete Cycle — Cancelled Prior to Stimulation

    HCPCS-LEVEL-II-S8055-ULTRASOUND-GUIDANCE-MULTIFETAL-REDUCTION-TC

    HCPCS Level II S8055: Ultrasound Guidance for Multifetal Pregnancy Reduction

    HCPCS-LEVEL-II-S8940-EQUESTRIAN-HIPPOTHERAPY-PER-SESSION

    HCPCS Level II S8940: Equestrian/Hippotherapy, Per Session

    HCPCS-LEVEL-II-S9024-PARANASAL-SINUS-ULTRASOUND

    HCPCS Level II S9024: Paranasal Sinus Ultrasound

    HCPCS-LEVEL-II-S9446-GROUP-PATIENT-EDUCATION-NON-PHYSICIAN

    HCPCS S9446: Patient Education, Non-Physician Provider, Group, Per Session

    HCPCS-LEVEL-II-S9451-EXERCISE-CLASS-NON-PHYSICIAN-SESSION

    HCPCS S9451: Exercise Classes, Non-Physician Provider, Per Session

    HCPCS-LEVEL-II-S9476-VESTIBULAR-REHABILITATION-PROGRAM-NON-PHYSICIAN-PER-DIEM

    HCPCS Level II S9476: Vestibular Rehabilitation Program, Per Diem

    Showing 1–10 of 532

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    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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