HCPCS Level II · Orthotic and prosthetic procedures and devices
L1821Knee orthosis, elastic with condylar pads and joints, with or without patellar control, prefabricated, off the shelf
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Source: CMS HCPCS quarterly update, October 2026. Page updated September 29, 2026.
About L1821
L1821 is an HCPCS Level II code in the L series (orthotic and prosthetic procedures and devices), describing knee orthosis, elastic with condylar pads and joints, with or without patellar control, prefabricated, off the shelf.
It was added to HCPCS effective 10/01/2024.
Its Medicare coverage code is "C", meaning coverage is left to the Medicare contractor's judgment.
Details
- Short description
- Ko elas w/ condyle pads otf
- Date added
- 10/01/2024
- Action effective
- 10/01/2024
- BETOS
- D1F
Related L18xx codes
- L1810Knee orthosis, elastic with joints, prefabricated item that has been trimmed, bent, molded, assembled, or otherwise customized to fit a specific patient by an individual with expertise
- L1812Knee orthosis, elastic with joints, prefabricated, off-the-shelf
- L1820Knee orthosis, elastic with condylar pads and joints, with or without patellar control, prefabricated item that has been trimmed, bent, molded, assembled, or otherwise customized to fit a specific patient by an individual with expertise
- L1830Knee orthosis, immobilizer, canvas longitudinal, prefabricated, off-the-shelf
- L1831Knee orthosis, locking knee joint(s), positional orthosis, prefabricated, includes fitting and adjustment
- L1832Knee orthosis, adjustable knee joints (unicentric or polycentric), positional orthosis, rigid support, prefabricated item that has been trimmed, bent, molded, assembled, or otherwise customized to fit a specific patient by an individual with expertise
- L1833Knee orthosis, adjustable knee joints (unicentric or polycentric), positional orthosis, rigid support, prefabricated, off-the shelf
- L1834Knee orthosis, without knee joint, rigid, custom fabricated
- L1836Knee orthosis, rigid, without joint(s), includes soft interface material, prefabricated, off-the-shelf
- L1840Knee orthosis, derotation, medial-lateral, anterior cruciate ligament, custom fabricated
- L1843Knee orthosis, single upright, thigh and calf, with adjustable flexion and extension joint (unicentric or polycentric), medial-lateral and rotation control, with or without varus/valgus adjustment, prefabricated item that has been trimmed, bent, molded, assembled, or otherwise customized to fit a specific patient by an individual with expertise
- L1844Knee orthosis, single 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
Common questions about L1821
Is HCPCS L1821 still valid?
- Yes. L1821 is active in the CMS October 2026 HCPCS file.
Does Medicare cover L1821?
- Its coverage code is "C": coverage is left to the Medicare contractor's judgment. Check the local coverage determination for your region.