CMS Price Transparency Data

Blood test, urea nitrogen (BUN, kidney)

Facility: Adventist Health Sierra Vista

Billing Code: 84520 (CPT)

Factual Cost Summary (Answer Capsule)

CPT Billing Code: 84520
Insurance Median: $23
Cash Discount Price: $45
vs. Medicare Baseline: 5.82x Medicare

The contracted insurance negotiated median rate for a Blood test, urea nitrogen (BUN, kidney) at Adventist Health Sierra Vista is $23. 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 $3.95, this hospital’s rate is 5.82x the Medicare baseline. Located in 1010 Murray St, San Luis Obispo, CA.

Cash / Self-Pay

$45

Average discount available for prompt cash payment at this facility.

Insurance Median

$23

Median negotiated contract rate across all mapped commercial carriers.

Medicare Reference Rate

$3.95

Standard federal government reimbursement rate for this code.

Visual Cost Comparison vs. Medicare

Medicare Reference Baseline: $3.95 (100%)

Cash / Self-Pay: $45 (1139%)

Insurance Median: $23 (582%)

Cash: $45 (1139% of Medicare)

Ins. Median: $23 (582% of Medicare)

Understanding this gauge: We use the federal Medicare rate of $3.95 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 582% of the Medicare baseline (a markup of 482%). 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 Shield Hmo/Pos	$2	51%
Aetna	$4	101%
Cencal Mcr Adv - All Other Plans	$4	101%
Tricare	$4	101%
UnitedHealthcare	$4 - $172	101%
Cfmg-Ca Forensic Med Grp Op/Profee Only-All Plans	$5	127%
Blue Shield Promise Mcal	$6	152%
Cencal Mcal	$6	152%
Ah Employee Health Plan - All Plans	$7	177%
Nbd-Ntwrks By Design Exclus-All Other Plans	$39	987%
Medi-Cal	$68	1722%
Hpn-Heritage Prov Ntwrk-All Plans	$170	4304%
Blue Shield Epn	$196	4962%
Blue Shield Epo/Ppo-All Other Plans	$269	6810%
Nbd-Ntwrks By Design Non-Exclus	$289	7316%
Ccah-Centrl Ca Allince Mcal-All Plans	$650	16456%
Coalinga-All Plans	$650	16456%

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: 84520.

Insurance In-Network Protection Plan

Contact your insurance company to confirm Adventist Health Sierra Vista is fully in-network.
Ask your insurer if "Prior Authorization" is required for CPT code 84520.
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.