Summary & Overview
HCPCS Level II A5506: Diabetic Shoe Modification with Offset Heel
HCPCS Level II code A5506 covers modification and fitting of an off-the-shelf depth-inlay shoe or a custom-molded shoe with off-set heel(s) for patients with diabetes, billed per shoe. This code is important nationally because footwear modifications reduce ulceration risk and support wound prevention and mobility in the diabetic population, and they are commonly reviewed in durable medical equipment and orthotics coverage policies. Key payers addressed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.
Readers will find a concise explanation of what A5506 represents, typical sites of service, and the clinical context for diabetes-related shoe modifications. The publication provides benchmarks and coverage signal discussions across major payers, outlines common billing considerations, and summarizes payer policy themes that affect coverage and claims processing for diabetic footwear modifications. Additionally, the content highlights clinical rationale for modified footwear in diabetes care and practical billing elements such as per-shoe billing and device classification. Data not available in the input is noted where applicable.
Billing Code Overview
HCPCS Level II code A5506 describes a shoe modification for patients with diabetes, specifically the modification (including fitting) of an off-the-shelf depth-inlay shoe or a custom-molded shoe with off-set heel(s), billed per shoe.
Service Type: Footwear modification / orthotic device service
Typical Site of Service: Durable medical equipment supplier, orthotics/prosthetics facility, or specialty footwear clinic
Clinical & Coding Specifications
Clinical Context
A 62-year-old patient with long-standing type 2 diabetes mellitus and peripheral neuropathy presents to a podiatry or orthotics clinic with forefoot pain and recurrent callus formation beneath the metatarsal heads. The patient has a history of a prior ulceration on the plantar surface of the foot that has healed, and the clinician determines that extra depth shoes with a depth-inlay and an off-set heel modification are indicated to reduce pressure points and prevent recurrent breakdown. The clinical workflow includes a podiatric or orthotic evaluation, foot measurements and casts or impressions as needed, selection of an off-the-shelf depth-inlay or custom-molded shoe, and modification (including fitting) of the shoe to add the off-set heel per shoe. Documentation in the medical record includes the diabetic diagnosis, neuropathy or prior ulceration, the clinical rationale for pressure redistribution, the type of shoe selected, details of the modification performed, and the fit assessment at delivery. Billing uses A5506 for the modification per shoe, with appropriate diagnosis linkage to diabetic foot complications and any procedure or device delivery notes retained in the chart.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
LT | Left side | When the modification is performed on the patient's left shoe only |
RT | Right side | When the modification is performed on the patient's right shoe only (Note: RT is not in the provided list; use LT with absence handled by payer rules) |
50 | Bilateral procedure | When both shoes are modified and payer allows bilateral reporting |
22 | Increased procedural services | When the modification required substantially greater work, time, or complexity than usual |
52 | Reduced services | When the full described modification is not completed as planned |
59 | Distinct procedural service | When an unrelated distinct service is performed on the same date (Note: 59 not in list; similar distinct modifiers include XU/XE family) |
62 | Two surgeons | When two surgeons from different specialties share performance (rare for shoe mods) |
78 | Unplanned return to the operating/procedure room | If re-entry is required for revision to the shoe modification (rare) |
76 | Repeat procedure by same physician | When the modification is repeated by the same provider on a later date (Note: 76 not provided; common repeat reporting is via 76) |
AS | Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery | When an APP performs or assists with the fitting under relevant state rules |
QX | CRNA service with medical direction by physician | When applicable for anesthesia-related billing (unlikely for this service) |
QY | Medical direction of one CRNA by one physician | When applicable (unlikely) |
NU | New equipment | When the shoe provided is new and being billed as such |
RR | Recovery room | When billing ancillary services related to recovery (not typical for shoe modification) |
| Taxonomy Code | Specialty | Notes |
|---|---|---|
213E00000X | Podiatry | Podiatrists commonly evaluate, prescribe, and fit therapeutic diabetic shoes and modifications |
213H00000X | Orthotics & Prosthetics | Orthotists/ prosthetists fabricate and modify depth-inlay and custom-molded shoes |
207L00000X | Family Medicine | Primary care physicians may prescribe diabetic shoes and document medical necessity |
208D00000X | Internal Medicine | Internists may manage diabetes complications and order therapeutic footwear |
261QM1900X | Physical Medicine & Rehabilitation | PM&R physicians may be involved in functional assessment and footwear prescriptions |
Related Diagnoses
| ICD-10 Code | Description | Clinical Relevance |
|---|---|---|
E11.40 | Type 2 diabetes mellitus with neuropathy, unspecified | Peripheral neuropathy increases risk of foot ulceration and justifies therapeutic shoe modifications |
E10.621 | Type 1 diabetes mellitus with foot ulcer | Prior or current foot ulceration indicates need for pressure-relieving footwear and modifications |
E11.621 | Type 2 diabetes mellitus with foot ulcer | Common indication for depth-inlay and off-set heel to off-load ulcer sites |
M79.671 | Pain in right foot | Localized foot pain from deformity or callus may be relieved by shoe modification |
M79.672 | Pain in left foot | As above, when symptoms are present on the left side |
L97.409 | Non-pressure chronic ulcer of unspecified part of left foot, unspecified severity | Chronic ulcer history necessitates protective footwear and shoe modifications |
L97.419 | Non-pressure chronic ulcer of unspecified part of right foot, unspecified severity | As above for the right foot |
G62.9 | Polyneuropathy, unspecified | Neuropathy with sensory loss warrants therapeutic footwear to prevent injury |
Related CPT Codes
| CPT Code | Description | Relationship to This Procedure |
|---|---|---|
99213 | Office or other outpatient visit for the evaluation and management of an established patient, typically 15 minutes | Used for the clinical evaluation and documentation of medical necessity prior to ordering diabetic therapeutic shoes and modifications |
99404 | Preventive medicine counseling and/or risk factor reduction intervention(s) provided to an individual, 60 minutes | May be used when extended diabetes self-care education and foot care counseling accompany footwear provision |
29540 | Strapping; foot (any type) | Performed when additional strapping or orthotic adjuncts are applied during fitting of the shoe |
97760 | Orthotic(s) management and training, initial encounter | Used when patient receives training and gait/functional assessment with new orthotic footwear |
97802 | Medical nutrition therapy; initial assessment and intervention, individual, face-to-face | Related to diabetes management that underpins medical necessity for therapeutic footwear |