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    v1.0.30
    OpenPayerBilling CodesTemporary National Codes (Non-Medicare)HCPCS hcpcs-level-ii-s9451-exercise-class-non-physician-session
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    HCPCS S9451: Exercise Classes, Non-Physician Provider, Per Session

    HCPCS Level II code S9451 represents reimbursement for exercise classes provided by a non-physician provider, billed per session, typically delivered as a group or individual outpatient therapeutic exercise session in settings such as outpatient clinics, community centers, or facility-based wellness programs where supervised exercise instruction is the primary service.

    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 typical patient is a 68-year-old woman with chronic knee osteoarthritis and deconditioning referred by her primary care provider to participate in supervised group exercise classes led by a licensed physical therapist assistant or certified exercise instructor. The goal is to improve joint mobility, muscle strength, balance, and aerobic capacity to reduce pain and fall risk. The patient presents to an outpatient rehabilitation clinic or community wellness center for a scheduled 60-minute session billed as S9451 (exercise classes, non-physician provider, per session). Clinical workflow includes: initial screening and brief functional assessment by the supervising clinician, group warm-up, targeted strengthening and range-of-motion activities, balance and gait training, and cooldown with home exercise recommendations. Vital signs are checked as indicated and participant response is documented in the medical record. Sessions are typically recurring on a weekly basis and may be part of a broader plan of care that includes periodic reassessment by a licensed clinician (e.g., physical therapist) and coordination with the referring provider.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    97110Therapeutic exercises to develop strength and endurance, range of motion and flexibility (each 15 minutes)Often provided before, during, or in individualized sessions accompanying S9451 when targeted one-on-one therapeutic exercise is needed

    | 97112 | Neuromuscular reeducation of movement, balance, coordination, kinesthetic sense, posture, and proprioception (each 15 minutes) | Used for focused balance and gait training when individual treatment is billed in addition to group exercise

    | 97116 | Gait training (includes stair climbing) (each 15 minutes) | Billed when individualized gait training occurs separate from the group class

    | 97530 | Therapeutic activities, direct (one-on-one) patient contact by the provider, use of dynamic activities to improve functional performance (each 15 minutes) | Complementary individualized functional training that may precede or follow group sessions

    | 97535 | Self-care/home management training (e.g., activities of daily living, compensatory training) | Used when the provider documents specific home exercise instruction or ADL training in addition to S9451

    Related Modifiers

    7 rows

    ModifierDescriptionWhen to Use
    22Modifier –22 (Increased Procedural Services) is used when a reported procedure is substantially more extensive than normally required. The CPT Manual and CMS state it may be appended only when the…- When to use: Append modifier -22 to a procedural CPT code when the service performed is substantially more extensive than the usual service described by that code — i.e., the procedure required…
    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…
    55Modifier –55 indicates the billing provider furnished only postoperative management for a procedure that has a global surgical period. According to AAPC, this modifier is appended to the same CPT…- Use modifier -55 when billing the same CPT surgical code that has a 10- or 90-day global period and you, as a provider other than the original surgeon, furnished ONLY postoperative management (no…
    56Modifier ‑56 indicates the reporting provider furnished only the preoperative management for a surgical procedure and did not perform the intraoperative or postoperative care. It is used in…- Use Modifier -56 when a provider performs only the preoperative management in a split‑care situation (one physician manages preop care while a different physician performs the intraoperative…
    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…
    95Modifier 95 indicates that a service was provided via synchronous, real‑time audio‑video telehealth rather than in‑person. Per CMS, AAPC and professional associations, append modifier 95 to claim…- Use modifier 95 to indicate a service was furnished via synchronous, real‑time audiovisual telehealth (a live audio‑video conference between patient and provider) rather than in‑person. - Pair…

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    173C00000X
    103G00000X
    374K00000X
    363A00000X
    125K00000X
    311500000X
    261QE0002X
    363LX0001X

    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-S9366-HOME-TPN-1-2L-PER-DAY-HOME-INFUSION

    HCPCS Level II S9366: Home Infusion TPN, 1–2 L/day

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

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