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L5858 — Addition to lower extremity prosthesis, endoskeletal knee shin system, microprocessor control feature, stance phase only, includes electronic sensor(s), any type

HCPCS Level II L-code · short descriptor: “Stance phase only” · PA required

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 2020-12-01)
Status
Active (April 2026 HCPCS)

Prior authorization

PA REQUIRED L5858 is on Medicare's DMEPOS Required Prior Authorization List (Lower Limb Prosthetics — nationwide since 2020-12-01).

Claims for this item without an affirmed prior-authorization decision are automatically denied (commonly surfacing as CO-197). Submit the PA request to your DME MAC with the order and supporting clinical documentation before delivery.

L5858 Medicare fee schedule (April 2026)

Base (no modifier) Prosthetics & orthotics

Medicare allowable ranges from $22336.47 to $24570.15 depending on state and rural status.

Former-CBA payment limits: ceiling $27258.44 · floor $20443.83

StateNon-ruralRural
AK$22336.47
AL$23009.05
AR$23006.91
AZ$22336.47
CA$22336.47
CO$23135.94
CT$22336.47
DC$22336.47
DE$22336.47
FL$23009.05
GA$23009.05
HI$22336.47
IA$22772.63
ID$22336.47
IL$22885.05
IN$22885.05
KS$22772.63
KY$23009.05
LA$23006.91
MA$22336.47
MD$22336.47
ME$22336.47
MI$22885.05
MN$22885.05
MO$22772.63
MS$23009.05
MT$23135.94
NC$23009.05
ND$23135.94
NE$22772.63
NH$22336.47
NJ$22336.47
NM$23006.91
NV$22336.47
NY$22336.47
OH$22885.05
OK$23006.91
OR$22336.47
PA$22336.47
PR$24570.15
RI$22336.47
SC$23009.05
SD$23135.94
TN$23009.05
TX$23006.91
UT$23135.94
VA$22336.47
VI$24570.15
VT$22336.47
WA$22336.47
WI$22885.05
WV$22336.47
WY$23135.94
Amounts are the Medicare DMEPOS fee-schedule allowables effective April 2026. Medicare typically pays 80% of the allowable after the Part B deductible; the patient owes 20%. A 2% sequestration reduction applies to the Medicare share. Former competitive-bidding-area adjustments and non-continental rates can differ — verify with your DME MAC.

Common denial codes to watch

Related L-codes

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