L6684 – Upper extremity addition, test socket, shoulder disarticulation or interscapular thoracic
HCPCS Level II code · L codes: Orthotic and Prosthetic Procedures and Devices
HCPCS codeL6684
- Long description
- Upper extremity addition, test socket, shoulder disarticulation or interscapular thoracic
- Short description
- Test socket shldr disart/tho
- Pricing indicator
38Orthotics, prosthetics, prosthetic devices & vision services- Medicare coverage
CCarrier judgment – coverage decided by the Medicare contractor- BETOS category
D1FProsthetic/Orthotic devices- Added
- January 1, 1986
- Last change
- January 1, 1986 – No change
Frequently asked questions
What is HCPCS code L6684?
L6684 is a HCPCS Level II code for upper extremity addition, test socket, shoulder disarticulation or interscapular thoracic.
Does Medicare cover L6684?
The HCPCS file lists coverage code C: Carrier judgment – coverage decided by the Medicare contractor. Coverage and payment also depend on local coverage determinations and the patient’s plan.
Nearby L codes
- L6665 – Upper extremity addition, teflon, or equal, cable lining
- L6670 – Upper extremity addition, hook to hand, cable adapter
- L6672 – Upper extremity addition, harness, chest or shoulder, saddle type
- L6675 – Upper extremity addition, harness, (e.g., figure of eight type), single cable design
- L6676 – Upper extremity addition, harness, (e.g., figure of eight type), dual cable design
- L6677 – Upper extremity addition, harness, triple control, simultaneous operation of terminal device and elbow
- L6680 – Upper extremity addition, test socket, wrist disarticulation or below elbow
- L6682 – Upper extremity addition, test socket, elbow disarticulation or above elbow
- L6686 – Upper extremity addition, suction socket
- L6687 – Upper extremity addition, frame type socket, below elbow or wrist disarticulation
- L6688 – Upper extremity addition, frame type socket, above elbow or elbow disarticulation
- L6689 – Upper extremity addition, frame type socket, shoulder disarticulation
- L6690 – Upper extremity addition, frame type socket, interscapular-thoracic
- L6691 – Upper extremity addition, removable insert, each
- L6692 – Upper extremity addition, silicone gel insert or equal, with or without locking mechanism, each
- L6693 – Upper extremity addition, locking elbow, forearm counterbalance
Source: CMS HCPCS Level II quarterly file, October 2026. Reference only – check payer policy before billing.