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Endoskeletal Knee, Powered Flexion/Extension Assist

Illinois rates for HCPCS L5859

Addition to lower extremity prosthesis, endoskeletal knee-shin system, powered and programmable flexion/extension assist control, includes any type motor(s)

Rates data updated July 2026.

How much does Endoskeletal Knee, Powered Flexion/Extension Assist cost?

$13,183

Typical negotiated rate. In Illinois, July 2026.

Insurers have agreed to pay about $13,183 for this service. The price depends on where it is billed: about $12,882 from a physician practice, and about $14,454 from a hospital or other facility. The two figures are alternatives, not parts of one bill.

These are rates insurers have negotiated with providers, not the amount a patient is billed. What you owe depends on your plan's deductible and coinsurance. Based on rates published by 6 insurance carriers under federal price transparency rules.

Where it's billed changes the price

Billed byTypicalRange
Physician practiceA doctor's office, clinic or independent provider$12,882$8,710 to $13,490
FacilityA hospital or hospital-owned outpatient department$14,454$8,710 to $23,988

How much rates vary

Facilitymedian $14,454 · 10th to 90th $8,710 to $47,863Professionalmedian $12,882 · 10th to 90th $8,318 to $17,783
$10K$20K$50K$100K$200Kfacility $14,454professional $12,882

Distribution of negotiated rates across all payers (price axis is log-scale). Each curve is scaled to its own total: facility and professional rates are different services, shown together to compare where they cluster. Need provider-level prices or 24+ months of history? Contact us.

Rates by insurance carrier

Insurance Carrier
Aetna
Setting
Facility
Modifier
Global
Typical Low
$8,709.64
Median
$8,709.64
Typical High
$17,782.79
Aetna
Setting
Professional
Modifier
Global
Typical Low
$8,128.31
Median
$8,709.64
Typical High
$17,782.79
BCBS
Setting
Facility
Modifier
Global
Typical Low
$21,379.62
Median
$28,840.32
Typical High
$169,824.37
BCBS
Setting
Professional
Modifier
Global
Typical Low
$13,489.63
Median
$13,489.63
Typical High
$13,489.63
Cigna
Setting
Facility
Modifier
Global
Typical Low
$9,772.37
Median
$9,772.37
Typical High
$19,498.45
Cigna
Setting
Professional
Modifier
Global
Typical Low
$8,317.64
Median
$8,317.64
Typical High
$19,054.61
Hally Health
Setting
Professional
Modifier
Global
Typical Low
$14,125.38
Median
$15,848.93
Typical High
$19,498.45
Hally Health
Setting
Facility
Modifier
Global
Typical Low
$100.00
Median
$100.00
Typical High
$100.00
Hally Health
Setting
Professional
Modifier
Global
Typical Low
$22,908.68
Median
$22,908.68
Typical High
$22,908.68
Molina
Setting
Professional
Modifier
Global
Typical Low
$5,011.87
Median
$10,715.19
Typical High
$15,135.61
United
Setting
Facility
Modifier
Global
Typical Low
$10,471.29
Median
$14,454.40
Typical High
$17,782.79
United
Setting
Professional
Modifier
Global
Typical Low
$6,918.31
Median
$8,709.64
Typical High
$14,791.08

Where Illinois sits

The same service costs 2.8 times more in Kansas than in California. Every bar is a state, most expensive first. Touch or drag across it to read any state, then open that state for its carriers and full range.

Illinois· 13th of 51

$13,183

KS $21,380CA $7,586

Median negotiated rate in each state, from every insurer that publishes one. States where no insurer publishes a rate for this service are not shown.