HCPCS Level II · Orthotic and prosthetic procedures and devices
L1847Knee orthosis, double upright with adjustable joint, with inflatable air support chamber(s), prefabricated item that has been trimmed, bent, molded, assembled, or otherwise customized to fit a specific patient by an individual with expertise
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Source: CMS HCPCS quarterly update, October 2026. Page updated September 29, 2026.
About L1847
L1847 is an HCPCS Level II code in the L series (orthotic and prosthetic procedures and devices), describing knee orthosis, double upright with adjustable joint, with inflatable air support chamber(s), prefabricated item that has been trimmed, bent, molded, assembled, or otherwise customized to fit a specific patient by an individual with expertise.
It was added to HCPCS effective 01/01/1999, and its current record took effect 01/01/2014.
Its Medicare coverage code is "C", meaning coverage is left to the Medicare contractor's judgment.
Details
- Short description
- Ko dbl upright w/air pre cst
- Date added
- 01/01/1999
- Action effective
- 01/01/2014
- 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
- L1821Knee orthosis, elastic with condylar pads and joints, with or without patellar control, prefabricated, off the shelf
- 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
Common questions about L1847
Is HCPCS L1847 still valid?
- Yes. L1847 is active in the CMS October 2026 HCPCS file.
Does Medicare cover L1847?
- Its coverage code is "C": coverage is left to the Medicare contractor's judgment. Check the local coverage determination for your region.