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Prosthetic Knee, Endoskeletal Four-Bar, Friction Swing

Illinois rates for HCPCS L5611

Addition to lower extremity, endoskeletal system, above knee (AK), knee disarticulation, four-bar linkage, with friction swing phase control

Rates data updated October 2026.

How much does Prosthetic Knee, Endoskeletal Four-Bar, Friction Swing cost?

$1,514

Typical negotiated rate. In Illinois, October 2026.

Insurers have agreed to pay about $1,514 for this service. The price depends on where it is billed: about $1,514 from a physician practice, and about $2,692 from a hospital or other facility.

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.

Prices by location type

Billed byTypicalRange
Physician practiceA doctor's office, clinic or independent provider$1,514$955 to $1,585
FacilityA hospital or hospital-owned outpatient department$2,692$2,188 to $4,467

How much rates vary

Facilitymedian $2,692 · 10th to 90th $1,230 to $11,220Professionalmedian $1,514 · 10th to 90th $891 to $2,239
$1K$2K$5K$10K$20Kfacility $2,692professional $1,514

Distribution of negotiated rates across all payers (price axis is log-scale). Need provider-level prices or 24+ months of history? Contact us.

Rates by insurance carrier

Insurance Carrier
Aetna
Setting
Facility
Modifier
None
Typical Low
$954.99
Median
$954.99
Typical High
$1,995.26
Aetna
Setting
Professional
Modifier
None
Typical Low
$954.99
Median
$954.99
Typical High
$1,584.89
Aetna
Setting
Professional
Modifier
52 · Reduced service
Typical Low
$478.63
Median
$478.63
Typical High
$794.33
Aetna
Setting
Professional
Modifier
53 · Discontinued
Typical Low
$190.55
Median
$190.55
Typical High
$316.23
Aetna
Setting
Professional
Modifier
55 · Aftercare only
Typical Low
$144.54
Median
$144.54
Typical High
$234.42
Aetna
Setting
Professional
Modifier
56 · Pre-op care only
Typical Low
$95.50
Median
$95.50
Typical High
$158.49
BCBS Illinois
Setting
Facility
Modifier
None
Typical Low
$2,344.23
Median
$3,235.94
Typical High
$13,489.63
BCBS Illinois
Setting
Professional
Modifier
None
Typical Low
$1,513.56
Median
$1,513.56
Typical High
$1,513.56
Cigna
Setting
Facility
Modifier
None
Typical Low
$1,230.27
Median
$1,230.27
Typical High
$1,230.27
Cigna
Setting
Professional
Modifier
None
Typical Low
$891.25
Median
$891.25
Typical High
$1,230.27
Hally Health
Setting
Professional
Modifier
None
Typical Low
$1,659.59
Median
$2,137.96
Typical High
$2,818.38
Hally Health
Setting
Facility
Modifier
None
Typical Low
$100.00
Median
$100.00
Typical High
$100.00
Hally Health
Setting
Professional
Modifier
None
Typical Low
$2,511.89
Median
$2,511.89
Typical High
$2,511.89
Molina
Setting
Professional
Modifier
None
Typical Low
$1,445.44
Median
$1,445.44
Typical High
$1,621.81
United
Setting
Facility
Modifier
None
Typical Low
$1,071.52
Median
$1,995.26
Typical High
$3,162.28
United
Setting
Professional
Modifier
None
Typical Low
$870.96
Median
$1,023.29
Typical High
$2,344.23

Where Illinois sits

The same service costs 3.1 times more in Hawaii than in Delaware. 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· 16th of 51

$1,514

HI $2,754DE $891

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.