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Prosthetic Knee, Endoskeletal Four-Bar, Friction Swing

North Carolina 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?

$1,479

Typical negotiated rate. In North Carolina, October 2026.

Insurers have agreed to pay about $1,479 for this service. The price depends on where it is billed: about $1,479 from a physician practice, and about $1,230 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 5 insurance carriers under federal price transparency rules.

Prices by location type

Billed byTypicalRange
Physician practiceA doctor's office, clinic or independent provider$1,479$1,122 to $1,479
FacilityA hospital or hospital-owned outpatient department$1,230$1,072 to $1,288

How much rates vary

Facilitymedian $1,230 · 10th to 90th $617 to $1,445Professionalmedian $1,479 · 10th to 90th $955 to $1,622
$1K$2Kfacility $1,230professional $1,479

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
$1,445.44
Median
$1,445.44
Typical High
$1,445.44
Aetna
Setting
Professional
Modifier
None (both parts)
Typical Low
$954.99
Median
$1,445.44
Typical High
$1,445.44
BCBS North Carolina
Setting
Professional
Modifier
None (both parts)
Typical Low
$1,412.54
Median
$1,479.11
Typical High
$1,995.26
Cigna
Setting
Facility
Modifier
None
Typical Low
$1,230.27
Median
$1,230.27
Typical High
$1,230.27
Cigna
Setting
Professional
Modifier
None (both parts)
Typical Low
$891.25
Median
$1,230.27
Typical High
$1,230.27
Medcost
Setting
Professional
Modifier
None
Typical Low
$891.25
Median
$977.24
Typical High
$1,288.25
Medcost
Setting
Facility
Modifier
None
Typical Low
$616.60
Median
$1,047.13
Typical High
$1,584.89
Medcost
Setting
Professional
Modifier
None (both parts)
Typical Low
$1,096.48
Median
$1,348.96
Typical High
$2,344.23
United
Setting
Facility
Modifier
None
Typical Low
$1,071.52
Median
$1,071.52
Typical High
$1,202.26
United
Setting
Professional
Modifier
None (both parts)
Typical Low
$741.31
Median
$954.99
Typical High
$1,445.44
14 more rates with less common billing modifiers

A modifier changes what was billed, for example a reduced or repeated service. Each of these modifiers carries under 10% of the published rates for this code. Modifier combinations, and modifiers with fewer than 30 rates for a carrier, are not listed.

Insurance Carrier
Aetna
Setting
Professional
Modifier
52 · Reduced service
Typical Low
$478.63
Median
$724.44
Typical High
$724.44
Aetna
Setting
Professional
Modifier
53 · Discontinued
Typical Low
$190.55
Median
$288.40
Typical High
$288.40
Aetna
Setting
Professional
Modifier
55 · Aftercare only
Typical Low
$141.25
Median
$213.80
Typical High
$213.80
Aetna
Setting
Professional
Modifier
56 · Pre-op care only
Typical Low
$95.50
Median
$144.54
Typical High
$144.54
Medcost
Setting
Professional
Modifier
26 · Professional part
Typical Low
$537.03
Median
$575.44
Typical High
$1,288.25
Medcost
Setting
Professional
Modifier
50 · Both sides
Typical Low
$1,621.81
Median
$2,041.74
Typical High
$6,606.93
Medcost
Setting
Professional
Modifier
51 · Multiple procedures
Typical Low
$549.54
Median
$676.08
Typical High
$2,187.76
Medcost
Setting
Professional
Modifier
80 · Assistant surgeon
Typical Low
$218.78
Median
$269.15
Typical High
$870.96
Medcost
Setting
Professional
Modifier
81 · Minimal assistant surgeon
Typical Low
$151.36
Median
$190.55
Typical High
$616.60
Medcost
Setting
Professional
Modifier
82 · Assistant surgeon, no resident
Typical Low
$151.36
Median
$190.55
Typical High
$616.60
Medcost
Setting
Professional
Modifier
AS · PA/NP assist
Typical Low
$151.36
Median
$190.55
Typical High
$616.60
Medcost
Setting
Professional
Modifier
SH · Second concurrent infusion
Typical Low
$549.54
Median
$549.54
Typical High
$549.54
Medcost
Setting
Professional
Modifier
SJ · Third+ concurrent infusion
Typical Low
$549.54
Median
$549.54
Typical High
$549.54
Medcost
Setting
Professional
Modifier
TC · Technical part
Typical Low
$812.83
Median
$870.96
Typical High
$1,949.84

Where North Carolina 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.

North Carolina· 17th of 51

$1,479

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.