HCPCS Level II code L5910 describes an addition to an endoskeletal below-knee prosthetic system using an alignable interface component; this code is used for billing the supply and incorporation of an alignable element into a below-knee prosthesis, typically associated with prosthetic assembly or modification services provided in an outpatient prosthetics clinic or orthotics/prosthetics facility.

For related coverage guidance, see recent payer policy updates: Clinical Review Criteria — Lymphedema Therapy and Training (Complete Decongestive Therapy; LVA), Therapy Services — Electric Stimulation for Pain, Swelling and Function in a Clinic Setting, Site of Care: Outpatient Hospital Setting for Physical and Occupational Therapy.