Reasonable Value of Medical Bills in Personal Injury Cases: The Public Data Alternative to Discovery

Every PI defense file has the same tell: a chargemaster total that nobody - not the adjuster, not opposing counsel, and not the hospital's own billing office - actually expects to get paid in full. That's the quiet admission built into the number: it's not a measure of reasonable value, it's an opening bid with no market behind it, and treating it as anything more is exactly where plaintiff's counsel wants the negotiation to start. Hospitals bill their full chargemaster rate - the same undiscounted sticker price regardless of payer - and courts have increasingly recognized that figure as an unreliable measure of a service's reasonable value.

The problem: chargemaster rates aren't reasonable value, but proving that used to require discovery

"Reasonable value" of medical services in a personal injury claim is not the billed amount. Courts across jurisdictions have moved toward a range bounded by real market reference points: Medicare's statutory rate typically forms the practical floor (what it costs a prudent provider to cover operating expenses), and a facility's own negotiated rates with commercial insurers - the amounts it actually accepts as full payment for the same service - serve as a far more defensible mid-to-upper reference point than the chargemaster figure ever was.

The problem has always been access, not persuasion. Provider-payer contracts are confidential by default, which is why defense counsel have historically needed to file discovery motions - subpoenas, requests for production, motions to compel - just to see the negotiated rate for a single procedure code. Some jurisdictions, including Texas, have expanded the right to discover this data specifically because courts recognize how central it is to a reasonable-value determination.

Here's the pattern that repeats across case files often enough to name - a composite of how this typically plays out, not any single matter: the motion to compel gets filed early, briefed over the following months, and a ruling lands well after the case's real decision point has already passed - by which time the file has either settled at the plaintiff's number or gone to trial arguing reasonable value from an expert's opinion instead of the facility's own accepted rates. The discovery fight doesn't fail; it just finishes after the question it was meant to answer stopped being live. Defense teams who've been through this once stop filing the motion reflexively and start asking whether the code is even hospital-billed - because if it is, there's now a faster path than the one that got them nothing last time.

What changed: much of this data is now public, for free

Two federal rules changed the picture for a meaningful slice of these disputes. The Hospital Price Transparency Rule (2021) requires hospitals to publish every negotiated rate they have with every commercial payer, for every service, in a standardized machine-readable file. The Transparency in Coverage rule (2022) requires the payers themselves to publish the same data from their side. For services billed by a hospital that's actually complying with the rule - not all of them are, which matters below - the negotiated rate a defense team used to need a subpoena for is sitting in a file the hospital was legally required to post.

That doesn't eliminate the need for discovery in every case. Non-hospital billers - ambulance services, independent imaging centers, physician groups billing separately from the facility - aren't covered by the hospital rule, and plenty of hospitals still publish incomplete or malformed files despite the mandate. But for a hospital-billed procedure with a real published file, the reference point that used to cost weeks and a motion now costs a lookup.

What the gap actually looks like

We pulled negotiated rate data directly from hospitals' own published files for CPT 70450 - a CT scan of the head or brain without contrast, one of the most common procedures ordered after a motor vehicle accident to rule out head injury.

Across 774 hospitals reporting this code:

That's not an isolated example. Checking three other commonly billed codes in this same category (two levels of emergency department visit, and a common imaging code) shows the same pattern at a somewhat smaller scale - a 2.25x to 2.45x gap between what's billed and what's actually accepted. The direction and the order of magnitude are consistent: the billed amount is a multiple of the negotiated rate, not a rough approximation of it.

A defensible range, not a single number

The strongest use of this data isn't "the negotiated rate is the only fair number" - it's building the same range courts already look for: Medicare's rate as the practical floor, the facility's own range of negotiated commercial rates as the core reference band, and (where relevant) a UCR-style 80th percentile as the upper bound for out-of-network or self-pay scenarios. The number that actually survives cross-examination isn't a median pulled from a report - it's the full spread of what that specific facility has accepted from multiple payers for that specific code, because it's the hospital's own accepted-payment history, not an expert's opinion about what it should be.

Putting this into a workflow

1. Pull every CPT/HCPCS code on the medical specials.
2. For each hospital-billed code, check whether that facility publishes a compliant price transparency file (not all do - verify before relying on it).
3. Where a file exists, pull the full distribution of negotiated rates across payers for that code - the spread itself is evidence, not just the median.
4. Anchor the reasonable-value range to Medicare's rate at the floor and the negotiated-rate distribution at the core, rather than starting from the billed amount and negotiating down.
5. Where no compliant file exists for a given code or biller, that's exactly where a traditional discovery request is still the right tool - this doesn't replace discovery, it narrows how much of the file actually needs it.

This is the workflow Medlyze's PI defense benchmarks is built to run at scale rather than one code at a time - pulling the published rate distribution for a facility and code directly from its own transparency files, with every number traceable back to its source.

For the billing-error side of the same case file - duplicate charges, upcoding, unbundling - see Medical Bill Review Best Practices, which covers that adjacent but distinct part of the audit.