Summary & Overview
HCPCS S1002: Customized Item Add-On for Basic Supply
HCPCS Level II code S1002 denotes a customized item provided in addition to a basic item when unique patient-specific modifications are necessary. Nationally, codes for customized components affect billing complexity and reimbursement pathways for durable medical equipment and related supply vendors, and influence claims adjudication across public and commercial payers. Key payers included in this analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of what S1002 represents, how it is typically used in the supply and DME context, and which settings commonly bill the code (DME suppliers, outpatient clinics, and home health). The report summarizes payer coverage patterns and common modifiers used with this code where available, highlights operational considerations for claims processing, and outlines clinical and billing contexts in which a customized add-on item is reported. Data elements not provided in the input, such as associated taxonomies, specific ICD-10 pairings, related codes, and detailed payer fee schedules, are noted as unavailable. This national-level overview is intended to orient billing staff, policy analysts, and revenue-cycle professionals to the purpose and typical application of S1002 within HCPCS Level II reporting.
Billing Code Overview
HCPCS Level II code S1002 describes a customized item billed in addition to a basic item when additional customization or modifications are required. The code represents an add-on supply or device component tailored to an individual patient beyond the standard offering.
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Service type: Durable medical equipment or custom supply augmentation
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Typical site of service: Durable medical equipment suppliers, outpatient clinics, home health settings
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A patient with a custom-fitted durable medical equipment component is seen in an outpatient orthotics and prosthetics clinic after limb salvage surgery and residual limb volume changes. The patient is a 58-year-old male with a transtibial amputation following peripheral arterial disease who requires a customized liner insert added to a standard prosthetic socket to address focal pressure areas and improve fit. The clinical workflow begins with a prosthetist evaluation documenting functional goals, limb shape and skin status, and prior socket problems. A cast or digital scan is obtained, measurements recorded, and a customized item fabricated in the laboratory as an addition to a basic prosthetic component. The prosthetist fits the customized item, documents adjustments and patient education, and delivers the device. Billing uses the HCPCS Level II code S1002 as an itemized customized addition to the basic prosthetic or orthotic item. Relevant modifiers are appended to indicate unusual procedural circumstances (for example, increased procedural services 22 for extensive documentation or reduced services 52 if partial fabrication occurred). Typical sites of service include outpatient prosthetics clinics, hospital-based orthotics and prosthetics departments, and specialty ambulatory surgical centers when fabrication or fittings occur on the same day as related procedures.
Coding Specifications
| Modifier | Description | When to Use |
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