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Endoskeletal Knee, Powered Flexion/Extension Assist

Massachusetts 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?

$14,791

Typical negotiated rate. In Massachusetts, July 2026.

Insurers have agreed to pay about $14,791 for this service. The price depends on where it is billed: about $14,791 from a physician practice, and about $11,482 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 7 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$14,791$8,318 to $14,791
FacilityA hospital or hospital-owned outpatient department$11,482$7,413 to $16,596

How much rates vary

Facilitymedian $11,482 · 10th to 90th $6,918 to $38,019Professionalmedian $14,791 · 10th to 90th $7,413 to $16,596
$100$1K$10K$100Kfacility $11,482professional $14,791

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
$7,413.10
Median
$7,413.10
Typical High
$7,413.10
Aetna
Setting
Professional
Modifier
Global
Typical Low
$6,760.83
Median
$7,943.28
Typical High
$16,595.87
AllWays Health Partners
Setting
Facility
Modifier
Global
Typical Low
$16,218.10
Median
$16,595.87
Typical High
$83,176.38
AllWays Health Partners
Setting
Professional
Modifier
Global
Typical Low
$7,943.28
Median
$13,182.57
Typical High
$19,952.62
Cigna
Setting
Facility
Modifier
Global
Typical Low
$9,772.37
Median
$9,772.37
Typical High
$9,772.37
Cigna
Setting
Professional
Modifier
Global
Typical Low
$8,317.64
Median
$8,317.64
Typical High
$11,481.54
Fallon Health
Setting
Facility
Modifier
Global
Typical Low
$60.26
Median
$3,630.78
Typical High
$9,772.37
Harvard Pilgrim
Setting
Professional
Modifier
Global
Typical Low
$14,791.08
Median
$14,791.08
Typical High
$22,387.21
Mass General Brigham
Setting
Facility
Modifier
Global
Typical Low
$16,218.10
Median
$16,595.87
Typical High
$83,176.38
Mass General Brigham
Setting
Professional
Modifier
Global
Typical Low
$7,943.28
Median
$13,182.57
Typical High
$19,952.62
United
Setting
Facility
Modifier
Global
Typical Low
$6,456.54
Median
$12,302.69
Typical High
$21,379.62
United
Setting
Professional
Modifier
Global
Typical Low
$7,762.47
Median
$14,454.40
Typical High
$15,135.61

Where Massachusetts 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.

Massachusetts· 9th of 51

$14,791

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.