Custom splinting and orthotic fabrication is one of the most specialized skills in occupational therapy and one that can set your private practice apart. While many OTPs use off-the-shelf orthoses, the ability to fabricate custom devices — and bill for them appropriately — creates a revenue stream that most independent practitioners overlook.
This guide covers when to offer custom fabrication versus prefabricated devices, how to source supplies cost-effectively, and how to bill for splinting services.
Custom Fabrication vs. Off-the-Shelf: Clinical and Business Considerations
When Custom Fabrication Is Indicated
Custom splints are clinically appropriate when off-the-shelf options don't fit the patient's anatomy, the condition requires a specific angle, force, or positioning that prefabricated options can't achieve, post-surgical protocols require precise positioning, or the patient has complex or unusual anatomy (pediatric, post-burn, post-amputation).
When Prefabricated Devices Make Sense
Prefabricated orthoses are appropriate for straightforward conditions with standard fitting requirements, when the clinical goal can be met with an off-the-shelf device, when cost is a concern and insurance coverage is limited, and for temporary use where custom fabrication isn't justified.
Supply Sourcing
Custom splinting materials represent a direct cost of service delivery, so sourcing matters for your margins.
Major Suppliers
Several suppliers serve the OT splinting market: North Coast Medical, Patterson Medical (now Medline), Performance Health (Sammons Preston), and AliMed. Compare pricing across suppliers — material costs vary significantly. Some suppliers offer starter kits or sample packs that let you try materials before committing to large orders.
Material Selection
Low-temperature thermoplastics (Aquaplast, Orfit, Omega) are the standard for custom OT splinting. Consider stocking two to three thicknesses and a few different material properties (stretchy vs. rigid, perforated vs. solid). Your material selection should match the conditions you most commonly treat.
Cost Management
Buy in bulk when possible — per-sheet cost drops significantly with larger orders. Track your per-splint material cost so you can price accurately. Store materials properly (cool, dry, flat) to prevent waste from warping or degradation.
Billing for Splinting Services
Splinting involves two billable components: the fabrication time and the device itself.
CPT Codes for Fabrication
97760 (Orthotic management and training, initial encounter) covers fitting, fabrication, and initial patient training. 97763 (Orthotic/prosthetic management, subsequent encounter) covers adjustments, modifications, and follow-up training.
HCPCS L-Codes for the Device
The splint itself is billed using HCPCS L-codes. Common codes for OT splints include L3807 (wrist hand finger orthosis, custom fabricated), L3900-series codes (various upper extremity orthoses), and L3999 (unlisted upper extremity orthosis — used when no specific code fits). Check payer-specific guidelines, as L-code coverage and documentation requirements vary.
Documentation Requirements
To support splinting claims, your documentation should include the clinical justification for a custom device (why off-the-shelf wasn't appropriate), the diagnosis and functional limitation being addressed, a description of the device fabricated (materials, design, purpose), fitting and patient education provided, and the wearing schedule and precautions communicated to the patient.
Adding Splinting to Your Practice Model
Splinting can be a standalone service offering or an integrated part of your hand therapy or upper extremity practice. If you're marketing splinting services specifically, position them as a specialty that requires advanced training — because it does.
Consider partnering with local hand surgeons and orthopedic practices who need OTPs for post-operative splinting. This creates a steady referral pipeline for a high-value service.
Training and Continuing Education
If your splinting skills are rusty or you want to expand your fabrication repertoire, seek out continuing education through ASHT (American Society of Hand Therapists) courses, hands-on splinting workshops at AOTA conference, manufacturer-sponsored training (many thermoplastic companies offer CE-eligible fabrication workshops), and mentorship with experienced hand therapists.
The CHT (Certified Hand Therapist) credential represents the highest level of specialization in this area, though you don't need CHT certification to fabricate splints in most states.
Specialized skills command premium value. OT Connected helps OTPs identify and monetize the expertise that makes their practice stand out.