10.5 The Medicare Therapeutic Shoe Program & Orthotic Specifications

10.5 The Medicare Therapeutic Shoe Program & Orthotic Specifications

Clinical Pearl: Therapeutic footwear only preserves a limb if the patient actually receives it, and for most Medicare beneficiaries that depends on a documentation chain the foot care nurse is often the only person tracking. This section covers the statutory benefit, who must sign what, and the codes that determine whether a claim is paid or denied.

The Medicare Therapeutic Shoe Bill (Statutory Benefit under Medicare Part B)

Enacted under the Omnibus Budget Reconciliation Act of 1987 (OBRA 1987, Public Law 100-203, Section 4072) and codified in Section 1861(s)(12) of the Social Security Act — with the benefit itself becoming available to beneficiaries in 1993, which is why it is often loosely (and incorrectly) called "OBRA 1993" — the Medicare Therapeutic Shoe Bill is a statutory benefit designed to prevent lower extremity amputations by providing specialized protective footwear to eligible Medicare Part B beneficiaries with diabetes.

+-------------------------------------------------------------------------+
|           MEDICARE THERAPEUTIC SHOE BILL INTERPROFESSIONAL FLOW         |
+-------------------------------------------------------------------------+
|                                                                         |
|   [ CERTIFYING PHYSICIAN (MD / DO) ]                                    |
|   - Must be actively managing patient's systemic diabetes care          |
|   - Documents >=1 of the 6 qualifying risk conditions in chart          |
|   - Signs "Statement of Certifying Physician" within 3 months of delivery|
|                           |                                             |
|                           v                                             |
|   [ PRESCRIBING PRACTITIONER (MD, DO, or DPM Podiatrist) ]              |
|   - Conducts detailed lower extremity biomechanical evaluation          |
|   - Writes detailed written order / prescription for shoes and inserts  |
|                           |                                             |
|                           v                                             |
|   [ QUALIFIED SUPPLIER / FITTER (C.Ped, CO, CPO, or DPM) ]              |
|   - Takes weight-bearing impressions / digital scans of foot            |
|   - Custom fabricates / modifies shoes and multi-density inserts        |
|   - Performs in-person fitting and gait evaluation at delivery          |
|   - Obtains signed delivery receipt and educates on break-in protocol   |
|                                                                         |
+-------------------------------------------------------------------------+

1. Patient Eligibility Criteria (The Six Qualifying Conditions)

To qualify for coverage under Medicare Part B, the beneficiary must meet two mandatory requirements:

1. The patient has a documented medical diagnosis of Diabetes Mellitus (Type 1 or Type 2); AND
2. The patient exhibits one or more of the following six statutory qualifying lower extremity risk conditions documented in their medical record:
   • Condition 1: History of previous partial or complete foot amputation (e.g., great toe amputation, ray resection, transmetatarsal amputation).
   • Condition 2: History of previous foot ulceration.
   • Condition 3: History of pre-ulcerative callus formation.
   • Condition 4: Peripheral neuropathy with evidence of callus formation.
   • Condition 5: Foot deformity (e.g., severe hallux valgus, rigid hammer/claw toes, Charcot neuroarthropathy, prominent metatarsal heads, pes cavus).
   • Condition 6: Poor circulation / Peripheral Arterial Disease (PAD) (e.g., diminished or absent pedal pulses, abnormal ABI, claudication, skin trophic changes).

2. Interprofessional Roles and Certification Requirements

Medicare Local Coverage Determinations (LCD) enforce strict, non-negotiable rules regarding who may sign certification documents:

• The Certifying Physician (MD or DO): The certifying physician must be a licensed Medical Doctor (MD) or Doctor of Osteopathy (DO) who is actively managing the patient's systemic diabetes care (e.g., endocrinologist, internist, family physician).
  • Critical Regulatory Rule: A Podiatrist (DPM), Nurse Practitioner (NP), or Physician Assistant (PA) cannot act as the certifying physician (unless the NP/PA is formally practicing under direct collaborative agreement with the managing MD/DO who reviews and countersigns the certification). The MD/DO must have conducted a comprehensive face-to-face diabetes evaluation within 6 months prior to signing the certification.
  • Statement of Certifying Physician (SCP): The MD/DO must sign the SCP within 3 months prior to the date of shoe delivery, certifying that the patient is participating in a comprehensive diabetes care plan, requires therapeutic footwear, and exhibits at least one qualifying condition.
• The Prescribing Practitioner: An MD, DO, or Podiatrist (DPM) who evaluates the foot pathology and writes the detailed prescription.
• The Supplier / Fitter: A Certified Pedorthist (C.Ped), Certified Orthotist (CO), Certified Prosthetist (CPO), or Podiatrist (DPM) who takes impressions, fabricates the orthoses, fits the footwear, and bills Medicare.

3. Annual Benefit Allowance and HCPCS Coding Structure

Medicare Part B covers therapeutic footwear on a calendar-year basis (January 1 through December 31). The annual statutory allowance provides the beneficiary with one of two primary options:

• Option A (Custom-Molded Shoes):
  • One pair of custom-molded shoes (HCPCS A5501) constructed over a positive cast of the patient's foot (for severe deformities that cannot fit an extra-depth shoe); AND
  • Up to three pairs of custom-molded, multi-density inserts (HCPCS A5513 / A5514).
• Option B (Extra-Depth Shoes):
  • One pair of commercial extra-depth shoes (HCPCS A5500); AND
  • Up to three pairs of custom-molded, multi-density inserts (HCPCS A5513 / A5514) OR three pairs of prefabricated heat-moldable inserts (HCPCS A5512).
• Shoe Modifications: Up to three shoe modifications (e.g., rigid rocker sole [A5503], wedge outsoles [A5504], metatarsal bars [A5505], flares [A5506], elevations [A5507]) can be substituted for an insert on a one-for-one basis.

Therapeutic Footwear & Orthotic Specifications Reference Table