CMS Price Transparency Data

Blood test, potassium

Facility: Marshfield Medical Center

Billing Code: 84132 (CPT)

Factual Cost Summary (Answer Capsule)

CPT Billing Code: 84132
Insurance Median: $40
Cash Discount Price: $45
vs. Medicare Baseline: 8.40x Medicare

The contracted insurance negotiated median rate for a Blood test, potassium at Marshfield Medical Center is $40. If you are paying out-of-pocket or uninsured, the self-pay cash discount rate is $45. Compared to the federal Medicare reimbursement reference rate of $4.76, this hospital’s rate is 8.40x the Medicare baseline. Located in 611 St Joseph Ave, Marshfield, WI.

Cash / Self-Pay

$45

Average discount available for prompt cash payment at this facility.

Insurance Median

$40

Median negotiated contract rate across all mapped commercial carriers.

Medicare Reference Rate

$4.76

Standard federal government reimbursement rate for this code.

Visual Cost Comparison vs. Medicare

Medicare Reference Baseline: $4.76 (100%)

Cash / Self-Pay: $45 (945%)

Insurance Median: $40 (840%)

Cash: $45 (945% of Medicare)

Ins. Median: $40 (840% of Medicare)

Understanding this gauge: We use the federal Medicare rate of $4.76 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 840% of the Medicare baseline (a markup of 740%). 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
Blue Cross Blue Shield	$5 - $30	105%
Group Health Cooperative Of Eau Claire	$5 - $43	105%
Managed Health Services	$5	105%
Security Health Plan (Shp)	$5 - $33	105%
Veteran'S Administration (Va Ccn)	$5	105%
UnitedHealthcare	$17	357%
Family Health Center (Fhc)	$24	504%
Amish/Mennonite	$26	546%
Sanford Health Plan	$26	546%
The Alliance	$33 - $39	693%
Besse Forest Products	$40	840%
Molina Healthcare Of Wi	$40	840%
Rice Lake School District	$40	840%
Wps Health Insurance	$41 - $45	861%
Trilogy	$42 - $45	882%
Cigna	$44	924%
Healtheos By Multiplan Inc.	$44 - $45	924%
Medica Of Wi	$44 - $45	924%
Corvel	$45	945%
Coventry	$45	945%
First Health	$45	945%
Health Partners	$45	945%
Health Smart	$45	945%
Three Rivers Provider Network (Trpn)	$45	945%
Rising Medical Work Comp	$46	966%

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 $45.
Request and sign a "Waiver of Insurance Submission" to prevent automatic billing.
Verify CPT Code matches exactly: 84132.

Insurance In-Network Protection Plan

Contact your insurance company to confirm Marshfield Medical Center is fully in-network.
Ask your insurer if "Prior Authorization" is required for CPT code 84132.
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.