HCPCS Level II code L5649 describes an addition to a lower extremity prosthetic socket specifically for ischial containment or a narrowed medial-lateral (M-L) socket; this code applies to prosthetic component fabrication or modification services for a lower-limb prosthesis and is typically associated with prosthetics/orthotics fabrication and fitting performed in an outpatient prosthetics clinic or specialty prosthetics lab setting.

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.