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Releasing A Stiff Knee Joint

Illinois rates for HCPCS 27435

Cuts through the tightened capsule and scar tissue around the knee so a joint that has stiffened up can bend and straighten further. It is used when a knee has lost movement after injury, prolonged immobilization or earlier surgery, and therapy alone has not restored it.

Rates data updated October 2026.

How much does Releasing A Stiff Knee Joint cost?

$4,148

Typical total for the visit. In Illinois, October 2026.

Insurers have agreed to pay about $4,148 for this procedure. That total is two separate charges: $912 to the doctor who performs it, and $3,236 to the hospital or surgery center where it takes place. Done somewhere without a facility charge, you pay only the first.

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.

What's inside this number

Part of the billTypicalRange
Physician feeThe doctor who performs it$912$832 to $1,288
Facility feeThe hospital or surgery center$3,236$2,291 to $4,786

How much rates vary

Facilitymedian $3,236 · 10th to 90th $1,175 to $7,943Professionalmedian $912 · 10th to 90th $741 to $1,549
$50$200$1K$5K$20Kfacility $3,236professional $912

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
$831.76
Median
$3,235.94
Typical High
$7,762.47
Aetna
Setting
Professional
Modifier
None
Typical Low
$741.31
Median
$831.76
Typical High
$831.76
BCBS Illinois
Setting
Facility
Modifier
None
Typical Low
$2,511.89
Median
$3,981.07
Typical High
$10,715.19
BCBS Illinois
Setting
Professional
Modifier
None
Typical Low
$954.99
Median
$1,318.26
Typical High
$1,548.82
Cigna
Setting
Facility
Modifier
None
Typical Low
$891.25
Median
$3,019.95
Typical High
$3,715.35
Cigna
Setting
Professional
Modifier
None
Typical Low
$831.76
Median
$891.25
Typical High
$1,412.54
Hally Health
Setting
Professional
Modifier
None
Typical Low
$870.96
Median
$1,318.26
Typical High
$3,467.37
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
$954.99
Median
$1,023.29
Typical High
$1,148.15
Molina
Setting
Professional
Modifier
None
Typical Low
$33.11
Median
$91.20
Typical High
$954.99
United
Setting
Facility
Modifier
None
Typical Low
$1,174.90
Median
$3,090.30
Typical High
$8,128.31
United
Setting
Professional
Modifier
None
Typical Low
$741.31
Median
$912.01
Typical High
$1,584.89
6 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
$380.19
Median
$416.87
Typical High
$416.87
Aetna
Setting
Professional
Modifier
53 · Discontinued
Typical Low
$151.36
Median
$165.96
Typical High
$165.96
Aetna
Setting
Professional
Modifier
54 · Surgery only
Typical Low
$562.34
Median
$616.60
Typical High
$616.60
Aetna
Setting
Professional
Modifier
55 · Aftercare only
Typical Low
$112.20
Median
$125.89
Typical High
$125.89
Aetna
Setting
Professional
Modifier
56 · Pre-op care only
Typical Low
$75.86
Median
$83.18
Typical High
$83.18
Aetna
Setting
Professional
Modifier
78 · Unplanned return to OR
Typical Low
$524.81
Median
$575.44
Typical High
$575.44

Where Illinois sits

The same service costs 3.1 times more in Wisconsin than in Maryland. 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.

Physician feeFacility fee

Illinois· 21st of 51

$4,148

$912 physician + $3,236 facility

WI $8,115MD $2,591

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.