CMS Price Transparency Data

Blood test, magnesium

Facility: UW Health

Billing Code: 83735 (CPT)

Factual Cost Summary (Answer Capsule)

CPT Billing Code: 83735
Insurance Median: $79
Cash Discount Price: $32
vs. Medicare Baseline: 11.79x Medicare

The contracted insurance negotiated median rate for a Blood test, magnesium at UW Health is $79. If you are paying out-of-pocket or uninsured, the self-pay cash discount rate is $32. Compared to the federal Medicare reimbursement reference rate of $6.7, this hospital’s rate is 11.79x the Medicare baseline. Located in 1401 East State Street, Rockford, IL.

Cash / Self-Pay

$32

Average discount available for prompt cash payment at this facility.

Insurance Median

$79

Median negotiated contract rate across all mapped commercial carriers.

Medicare Reference Rate

$6.7

Standard federal government reimbursement rate for this code.

Visual Cost Comparison vs. Medicare

Medicare Reference Baseline: $6.7 (100%)

Cash / Self-Pay: $32 (478%)

Insurance Median: $79 (1179%)

Cash: $32 (478% of Medicare)

Ins. Median: $79 (1179% of Medicare)

Understanding this gauge: We use the federal Medicare rate of $6.7 as the cost baseline. Rates below the baseline represent excellent value. In-network commercial rates commonly hover around 150% - 250% of Medicare, while rates exceeding 300% are elevated. Hover over the green and blue markers to view detailed calculations.

Elevated Commercial Rate Alert (Value-Gap)

The negotiated rate at this facility is 1179% of the Medicare baseline (a markup of 1079%). Patients with high-deductible plans or out-of-network benefits may face excessive out-of-pocket costs.

Consult Patient Advocate

Out-of-Pocket Cost Estimator

Estimate whether it is more economical to use your insurance or pay the upfront self-pay cash rate.

Billing Status

Remaining Deductible ($)

Your Coinsurance Rate (%)

Input your details and click calculate to compare out-of-pocket costs.

Commercial Insurance Negotiated Rates

Negotiated contract ranges established by major commercial carriers at this facility.

Carrier / Plan Group	Contract Rate Range	vs. Medicare Reference
Aetna	$7 - $521	104%
Blue Cross Blue Shield	$7 - $357	104%
Humana	$7	104%
Medicare (plans)	$7	104%
Mychoice Wi Medical Adv	$7	104%
UnitedHealthcare	$7 - $11	104%
Quartz Aso	$9 - $394	134%
Ecoh	$13 - $568	194%
Hfn	$13 - $568	194%
Quartz Fully Insured	$14 - $250	209%
Alliance Premier Network	$23 - $394	343%
The Alliance	$29 - $507	433%
Wps Ppo	$32 - $558	478%
Cigna	$33 - $576	493%
Beloit Healt System	$37 - $651	552%
Mercycare	$39 - $673	582%
First Health/Coventry	$41 - $709	612%
Health Payment Systems	$48 - $842	716%
Healthsmart	$48 - $842	716%
Sheboygan Employers Health Network	$52 - $898	776%
Multiplan	$58 - $1,003	866%

Self-Pay Upfront Cash Action Plan

Request a "Self-Pay classification" with the billing desk before receiving care.
Ask for a written "Prompt-Pay Discount" agreement quoting the price of $32.
Request and sign a "Waiver of Insurance Submission" to prevent automatic billing.
Verify CPT Code matches exactly: 83735.

Insurance In-Network Protection Plan

Contact your insurance company to confirm UW Health is fully in-network.
Ask your insurer if "Prior Authorization" is required for CPT code 83735.
Confirm the specific physician or imaging center is also in-network (not just the hospital building).
Audit your Explanation of Benefits (EOB) against the final itemized hospital invoice.