L1846 — Knee orthosis, double upright, thigh and calf, with adjustable flexion and extension joint (unicentric or polycentric), medial-lateral and rotation control, with or without varus/valgus adjustment, custom fabricated

Code system

HCPCS Level II

Family

L — Orthotics & prosthetics

Medicare coverage status

Carrier judgment — coverage decided by the DME MAC

DMEPOS payment category

Prosthetics & orthotics

Prior authorization

Required (Medicare, since 2026-04-13)

Face-to-face & WOPD

Not on the required list

Status

Active (April 2026 HCPCS)

Every Medicare DMEPOS claim needs a Standard Written Order with all six elements (42 CFR 410.38(d)):

• Beneficiary name or Medicare Beneficiary Identifier (MBI) (42 CFR 410.38(d)(1)(i)(A))
• General description of the item (42 CFR 410.38(d)(1)(i)(B))
• Quantity to be dispensed, if applicable (42 CFR 410.38(d)(1)(i)(C))
• Order date (42 CFR 410.38(d)(1)(i)(D))
• Treating practitioner name or NPI (42 CFR 410.38(d)(1)(i)(E))
• Treating practitioner signature (42 CFR 410.38(d)(1)(i)(F))

Not on the F2F/WOPD list (April 13, 2026 update — 83 items). The standard written order must reach the supplier before claim submission.

Blank requirements checklist only — MyMedi-AI never collects or stores completed orders.