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Below-Knee Back Check, Extension Control

Illinois rates for HCPCS L5686

Addition to lower extremity, below knee (BK), back check (extension control)

Rates data updated October 2026.

How much does Below-Knee Back Check, Extension Control cost?

$44.67

Typical negotiated rate. In Illinois, October 2026.

Insurers have agreed to pay about $44.67 for this service. The price depends on where it is billed: about $38.90 from a physician practice, and about $95.50 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$38.90$34.67 to $66.07
FacilityA hospital or hospital-owned outpatient department$95.50$79.43 to $162

How much rates vary

Facilitymedian $95 · 10th to 90th $45 to $407Professionalmedian $39 · 10th to 90th $32 to $83
$50$100$200$500facility $95professional $39

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
$34.67
Median
$34.67
Typical High
$70.79
Aetna
Setting
Professional
Modifier
None
Typical Low
$34.67
Median
$34.67
Typical High
$56.23
Aetna
Setting
Professional
Modifier
52 · Reduced service
Typical Low
$17.38
Median
$17.38
Typical High
$28.18
Aetna
Setting
Professional
Modifier
53 · Discontinued
Typical Low
$6.92
Median
$6.92
Typical High
$11.22
Aetna
Setting
Professional
Modifier
55 · Aftercare only
Typical Low
$5.13
Median
$5.13
Typical High
$8.51
Aetna
Setting
Professional
Modifier
56 · Pre-op care only
Typical Low
$3.47
Median
$3.47
Typical High
$5.62
BCBS Illinois
Setting
Facility
Modifier
None
Typical Low
$85.11
Median
$117.49
Typical High
$478.63
BCBS Illinois
Setting
Professional
Modifier
None
Typical Low
$53.70
Median
$53.70
Typical High
$53.70
Cigna
Setting
Facility
Modifier
None
Typical Low
$44.67
Median
$44.67
Typical High
$44.67
Cigna
Setting
Professional
Modifier
None
Typical Low
$33.11
Median
$33.11
Typical High
$44.67
Hally Health
Setting
Professional
Modifier
None
Typical Low
$58.88
Median
$77.62
Typical High
$104.71
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
$91.20
Median
$91.20
Typical High
$91.20
Molina
Setting
Professional
Modifier
None
Typical Low
$52.48
Median
$52.48
Typical High
$57.54
United
Setting
Facility
Modifier
None
Typical Low
$36.31
Median
$70.79
Typical High
$100.00
United
Setting
Professional
Modifier
None
Typical Low
$30.20
Median
$34.67
Typical High
$81.28

Where Illinois sits

The same service costs 2.5 times more in Hawaii than in Florida. 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· 22nd of 51

$44.67

HI $81.28FL $33.11

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.