Summary & Overview

HCPCS A5508: Deluxe Diabetic Depth-Inlay or Custom-Molded Shoe

HCPCS Level II code A5508 designates a deluxe feature for off-the-shelf depth-inlay shoes or custom-molded shoes, billed per shoe and limited to patients with diabetes. This code matters nationally because therapeutic footwear is a key element in preventing diabetic foot complications, reducing ulceration risk, and lowering ambulatory and inpatient care needs. Coverage and utilization of this supplemental footwear feature influence access to appropriate foot care and may affect downstream costs in diabetes management.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of what the code represents, payer coverage patterns, typical sites of service, common billing modifiers, and clinical context surrounding diabetic therapeutic footwear. The publication summarizes benchmarks for utilization where available, notes policy or coding guidance relevant to diabetic footwear, and clarifies scenarios in which a deluxe feature or custom molding is documented and billed.

This executive summary gives clinicians, billing professionals, and policy analysts a focused briefing on HCPCS Level II code A5508, what services it represents, and the operational and payer considerations that affect its use nationally.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareA5508HCPCS Level IItherapeutic footweardiabetic foot caredurable medical equipmentcustom-molded shoedepth-inlay shoepodiatrybilling and coding

Billing Code Overview

HCPCS Level II code A5508 describes a deluxe feature of an off-the-shelf depth-inlay shoe or a custom-molded shoe, provided per shoe, limited to patients with diabetes. This item is intended to address footwear needs related to diabetic foot complications by offering enhanced depth and inlay features for accommodation of deformity, orthotic inserts, or pressure redistribution.

Service Type: Durable medical equipment / therapeutic footwear

Typical Site of Service: Durable medical equipment suppliers, specialty footwear clinics, podiatry or orthotics clinics, and outpatient medical equipment providers

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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 because of recurrent forefoot callus formation and early Charcot foot changes. The patient has loss of protective sensation and a healed plantar ulcer on the contralateral foot within the past year. Following a multidisciplinary review (podiatry, orthotist, and primary care/endocrinology), the clinician documents the medical necessity for therapeutic footwear. The patient is measured and fitted for a diabetic shoe with a deluxe feature depth-inlay designed to offload pressure areas. The orthotics technician verifies the off-the-shelf shoe is modified with a depth-inlay; billing is prepared for one shoe using the HCPCS Level II code A5508 (per shoe). Typical workflow includes medical documentation of diabetes and neuropathy, a footwear order signed by a qualifying physician or non-physician practitioner, measurement and fitting by an authorized supplier, and delivery with patient education on shoe wear. Typical site of service is an outpatient podiatry clinic, orthotics/prosthetics supplier location, or durable medical equipment supplier with space for fittings.

Coding Specifications

Modifier	Description	When to Use
`00`	No modifier; standard claim submission	Use when no special circumstances apply to the billed shoe.
`22`	Increased procedural services	Use when additional work beyond typical fitting is documented and meets payer criteria.
`23`	Unusual anesthesia	Not typically applicable to `A5508`; include only if unusual anesthesia is separately billed and justified.
`50`	Bilateral procedure	Use when both left and right shoes are furnished and billed per shoe; some payers require bilateral modifier to indicate two units.
`52`	Reduced services	Use when a reduced service is documented (e.g., partial furnishing) and payer accepts modifier for DMEPOS.
`53`	Discontinued procedure	Rare for shoe provision; use if the fitting/provision was started but appropriately discontinued.
`54`	Surgical care only	Not typically applicable to `A5508`; include only if part of a global surgical episode and payer requires.
`55`	Postoperative management only	Not typically applicable; include only as dictated by payer policy.
`56`	Preoperative management only	Not typically applicable; include only as dictated by payer policy.
`62`	Two surgeons	Not applicable to DMEPOS; do not use for `A5508` unless extraordinary documentation justifies.
`AS`	Accredited Supplier	Use to identify services provided by an accredited durable medical equipment supplier when payer requires.
`NU`	New equipment	Use when the shoe is furnished as new; typically used for durable medical equipment claims.
`QX`	Ordering/Referring Physician Not Credentialed	Use when the supplier documents separate billing requirements for the referring or ordering practitioner; follow payer rules.
`QY`	Clinic or Group Billing Exception	Use when a supplier uses designated billing relationships; follow payer-specific guidance.

Taxonomy Code	Specialty	Notes
261Q00000X	Podiatry	Podiatrists commonly evaluate diabetic foot and prescribe therapeutic footwear.
222Z00000X	Orthotics & Prosthetics	Orthotists/prosthetists measure, fabricate, and fit diabetic footwear and depth-inlay modifications.
207Q00000X	Family Medicine	Primary care physicians document diabetes diagnosis and write orders for therapeutic shoes.
207P00000X	Internal Medicine	Internists manage diabetes and supply physicians' orders for therapeutic footwear.
208M00000X	Endocrinology	Endocrinologists manage complex diabetes cases and justify therapeutic shoe necessity.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`E11.40`	Type 2 diabetes mellitus with diabetic neuropathy, unspecified	Diabetic neuropathy causing loss of protective sensation is a common indication for therapeutic depth-inlay shoes.
`E10.42`	Type 1 diabetes mellitus with diabetic polyneuropathy	Type 1 diabetics with neuropathy also qualify for therapeutic footwear to reduce ulcer risk.
`E11.621`	Type 2 diabetes mellitus with foot ulcer	Patients with current or recent foot ulcers often require therapeutic footwear to offload pressure and prevent recurrence.
`E11.51`	Type 2 diabetes mellitus with peripheral angiopathy without gangrene	Peripheral vascular disease complicates healing; therapeutic shoes can reduce pressure-related trauma.
`M86.60`	Osteomyelitis, unspecified site	Patients with a history of foot osteomyelitis may need protective footwear during recovery and prevention.
`M86.171`	Chronic tuberculous osteomyelitis of right ankle and foot	Severe foot infections or chronic bone disease warrant specialized footwear as part of long-term management.
`L97.421`	Non-pressure chronic ulcer of right heel and midfoot	Chronic plantar ulcers are directly related to need for off-loading footwear such as depth-inlay shoes.
`G62.9`	Polyneuropathy, unspecified	Peripheral neuropathy from various causes leads to loss of sensation and justification for therapeutic footwear.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`97802`	Medical nutrition therapy; initial assessment and intervention, individual, per 15 minutes	May be provided as part of comprehensive diabetic foot care visits that support medical necessity for therapeutic footwear.
`99213`	Office or other outpatient visit for an established patient, typically 15 minutes	Common office visit code used by podiatrists or physicians to evaluate diabetic foot and document need for `A5508` footwear.
`29540`	Application of short leg plaster cast (below knee)	Occasionally used in the acute management of diabetic foot conditions prior to definitive footwear; relevant in workflow when immobilization precedes shoe fitting.
`11043`	Debridement, subcutaneous tissue, first 20 sq cm or less	Debridement of diabetic foot ulcerations may occur before provision of therapeutic footwear to promote healing and prevent recurrence.
`97810`	Acupuncture for musculoskeletal conditions (example supportive therapy)	Data not typically linked directly to shoe provision; included here as ancillary supportive therapy when part of multidisciplinary management.