Your Client's Carrier Choice Changes the Rate by 80%+

For the same procedure, at the same hospital, in the same state, the negotiated rate a self-funded plan pays can triple — or drop by 80% — depending solely on which carrier the plan is contracted with. The gap is not theoretical. It sits in the hospital's own MRF file, month after month. Below: three named Texas hospitals where BCBS TX and UHC pay each other's price by orders of magnitude for a total knee replacement.

The headline — total knee replacement (CPT 27447)

Hospital	City	BCBS TX median	UHC median	Gap	Cheaper carrier
CHI St. Joseph Health Regional Hospital	Bryan, TX	$15,099	$2,869	81%	UHC
Valley Regional Medical Center	Brownsville, TX	$46,770	$15,672	66%	UHC
Ascension Seton system (8 facilities)	Central TX	$2,089–$3,422	$18,402	85–88%	BCBS

A self-funded employer with 200 lives and two knee replacements a year shifts $24,000–$31,000 on this single CPT alone by choosing the right carrier for their network's hospitals. At renewal, that's not rounding-error.

Why the rates split this hard

Each hospital negotiates independently with each carrier. Volume, network exclusivity, regional market share, and steerage agreements all change the price. A hospital that's a "preferred" partner of one carrier (book-of-business commitment, narrow-network anchor) typically gets a steep discount on that carrier — and prices the other carriers at near-list. So when BCBS TX has a deep contract with the Ascension Seton system, BCBS plans pay ~$3k for a knee while UHC plans at the same hospitals pay $18k. The reverse pattern shows up in border-region hospitals like Valley Regional, where UHC has the steerage advantage and BCBS pays full freight.

The data has always existed; it's just been buried in 50 GB MRF files no one read. Now that it's queryable, the implication for plan design is direct: your client's carrier is not just a brand, it's a price contract for every facility in their network.

What's actually in the data

Source: 6.23 billion negotiated-rate rows captured from Texas hospital MRF files through April 23, 2026. The above figures are per-(hospital, carrier) medians across all published rates for CPT 27447 in the range $1,000 – $200,000 (filtering sentinel/chargemaster outliers).

Pairs with fewer than 3 rate rows on either carrier are excluded. Hospital-system attribution in the dataset is imperfect — some rows appear under multiple facility IDs within the same parent system (for example, the Ascension Seton system contract surfaces at every facility under it). The aggregate gap numbers hold; treat system-wide figures as a system contract, not a per-facility quote.

Why this matters — by role

For an insurance broker advising a self-funded employer. Three concrete moves this data enables today:

Carrier-switch case. If your client is BCBS at Valley Regional and UHC is 66% cheaper on orthopedic procedures, that's a named savings figure for the renewal conversation — not "shop around," a specific dollar.
Narrow-network plan design. If UHC pays 780% more than BCBS at the Ascension Seton system, exclude that system from a narrow-network build under BCBS — the savings absorb the network-disruption premium.
Stop-loss repricing. Laser management for 2026–2027 should use carrier-hospital gap data, not just 2025 claim history.

For a self-funded employer benefits team. Your TPA's claims data tells you what you paid. The MRF data tells you what you would have paid on a different carrier. The delta is the case for or against switching at next renewal — and now you can compute it per-facility, per-CPT, against the full TX distribution.

For a payer's contracting team. The same data shows where you have a leadership position vs. where you're priced like a guest. Both are actionable: protect the leadership positions with longer terms; renegotiate the guest positions with volume commitments.

How to get the version that matters to your client

For a self-funded client's specific carrier and the hospitals their employees actually use, we'll run the same cross-carrier cut and return a same-day PDF. One per broker, free, no strings.

Reply with: carrier name + three hospitals in-network for them.

MRF Monitor · Issue 006 · April 24, 2026 · reports.medbillresolve.com
Methodology and source code available on request. Data refreshed weekly. Past briefs at reports.medbillresolve.com.

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TX Hospital Rate Snapshot — Q2 2026. Per-hospital × per-payer × per-CPT distributions for the top shoppable procedures across 519 publishing Texas hospitals. One-time delivery, refresh next quarter for the same price.

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