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    v1.0.31
    OpenPayerBilling CodesLower Extremity Application of CastsCPT cpt-29440-removable-walker-or-heel-pad-for-leg-cast
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    CPT 29440: Removable Walker or Heel Pad Added to Leg Cast

    Medicare pays $45 and commercial payers pay $129 on average nationally for this procedure.

    CPT code 29440 describes adding a removable walker device to an existing leg cast or applying a rubber heel pad to a cast during the later stages of treatment when the patient is permitted to bear weight; service type: cast modification/adjustment; typical site of service: outpatient orthopedic clinic or ambulatory surgery/cast room.

    For related coverage guidance, see recent payer policy updates: Medical Necessity Guidelines Non-Emergency Transportation, Non-Emergent Transportation Medical Policy, Non-Emergency Facility to Facility Transfers.

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    National Reimbursement Benchmarks

    Medicare's mean rate of $45.5 sits well below BUCA's average commercial mean of $128.8, indicating that commercial reimbursement for CPT 29440 is substantially higher than the federal baseline. The gap of $83.3 between Medicare and BUCA highlights a material difference in average allowed amounts that could affect overall commercial-to-Medicare comparisons across specialties.

    Dispersion varies notably: Blue Cross Blue Shield has the widest interquartile spread with P75–P25 = $72 ($225.2 − $151.3), followed by UnitedHealth Group at $40 ($84.4 − $44.2). Cigna's spread is $33.6 ($74.7 − $41.1). Aetna is the tightest among commercial carriers with an IQR of $30 ($41 − $10.4). BUCA's IQR is $57.1 ($157.3 − $100.2), while Medicare's IQR is narrow at $4 ($47 − $43).

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    National Payer Mean Reimbursement Rates

    State Reimbursement Rates

    State: Alaska1 / 51

    Rate by payer

    Clinical & Coding Specifications

    Clinical Context

    A 46-year-old patient presents to an orthopaedic clinic two to four weeks after sustaining a closed distal tibia fracture treated initially with a short leg cast. Radiographs at the follow-up visit show progressing callus formation and the treating orthopaedic surgeon documents that the patient is permitted to begin protected weight bearing. To facilitate ambulation while maintaining immobilization, the provider converts the existing cast by adding a removable walker attachment to the cast or applies a rubber heel pad to the cast to allow heel strike. The clinical workflow includes review of imaging and wound/cast site, discussion of weight-bearing status, modification of the cast with the walker or heel pad in procedure room or casting area, patient education about walker use and precautions, documentation of the procedure and wound/circulation checks, and scheduling of subsequent follow-up imaging and visits.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    29405Application of short leg cast (below knee to toes)Initial immobilization procedure that may precede later addition of a removable walker or heel pad.
    29515Application of short leg splint (calf to foot)

    Related Modifiers

    9 rows

    ModifierDescriptionWhen to Use
    25CPT modifier 25 indicates that on the same day as another procedure or service, the same physician or other qualified health care professional provided a significant, separately identifiable…- When to apply: Use modifier 25 only on an E/M code to indicate the same provider delivered a significant, separately identifiable E/M service on the same day as another procedure or service — i.e.,…
    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…
    50Modifier –50 (Bilateral Procedure) is appended to a CPT code when an identical procedure is performed on paired anatomical structures during the same operative session. The AMA states to add…- Use modifier -50 when the same CPT surgical, diagnostic, or radiology procedure is performed on paired anatomical structures (both sides of the body) during the same operative/session by the same…
    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…
    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…
    79Modifier 79 indicates a surgical procedure performed during the postoperative global period of a prior surgery that is unrelated to the original procedure. Per AMA/CPT and CMS guidance, it is…- Use modifier 79 when the same physician (or same‑specialty physician in the same group) performs a surgical procedure during the postoperative global period of a prior surgery and the new procedure…

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    207X00000X
    207XX0004X
    207XS0117X
    207SG0205X
    251C00000X
    207ZP0102X
    163WP0218X
    163WG0600X

    Related Payer Policy Updates

    Specialty: Emergency & Medical Transportation1 / 3

    10 rows

    PolicyPayerEffective Date
    Medical Necessity Guidelines Non-Emergency TransportationMass General Brigham Health Plan2026-11-01
    Non-Emergent Transportation Medical PolicyHealth-New-England2026-11-01
    Non-Emergency Facility to Facility Transfershap_caresource_mi_coordinated_health2026-11-01
    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

    Related Codes

    CPT-29305-HIP-SPICA-BODY-CAST-TRUNK-AND-ONE-LEG

    CPT 29305: Hip Spica Body Cast for Trunk and One Leg

    CPT-29325-HIP-SPICA-BODY-CAST-APPLICATION

    CPT 29325: Hip Spica Cast Application for Hip/Thigh Immobilization

    CPT-29345-LONG-LEG-CAST-APPLICATION-IMMOBILIZATION

    CPT 29345: Long Leg Cast Application, Knee and Leg Immobilization

    CPT-29355-LONG-LEG-AMBULATORY-CAST-APPLICATION

    CPT 29355: Long Leg Ambulatory Cast Application

    CPT-29358-LONG-LEG-BRACE-CAST-FEMUR-FRACTURE-IMMOBILIZATION

    CPT 29358: Long Leg Brace-Type Cast with Knee Motion for Femur Fracture

    CPT-29365-CYLINDER-CAST-LEG-KNEE-IMMOBILIZATION-FRACTURE

    CPT 29365: Thigh-to-Lower-Leg Cylinder Cast Immobilization

    CPT-29405-SHORT-LEG-CAST-LOWER-LEG-FRACTURE-ANKLE-SPRAIN

    CPT 29405: Short Leg Cast for Lower Leg Fracture or Severe Ankle Sprain

    CPT-29425-LOWER-LEG-CAST-APPLICATION-TIBIA-FIBULA-ANKLE

    CPT 29425: Lower Leg Cast Application with Walking Accommodation

    CPT-29435-WALKING-CAST-LOWER-LEG-TIBIA-FIBULA-FRACTURE

    CPT 29435: Lower Leg Walking Cast for Tibia/Fibula Shaft Fracture

    CPT-29445-TOTAL-CONTACT-WALKING-CAST-FOR-DIABETIC-ULCER-OFFLOADING

    CPT 29445: Total Contact Cast for Diabetic Foot Ulcer

    Showing 1–10 of 11

    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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    Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

    Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.

    Alternative initial stabilization performed in the acute setting before definitive casting and later modification.
    29700Removal or bivalving of castPerformed when cast removal or bivalving is needed before applying a walker attachment or heel modification.
    29705Removal or bivalving of cast, other than described in 29700Used for other cast alteration or removal techniques prior to or instead of adding a walker or heel pad.