| Dimension | Price shopping tools | Medical bill review |
|---|---|---|
| When to use | Before care | After care |
| What it does | Compare provider costs prospectively | Find errors in existing bill |
| Finds billing errors | No | Yes |
| Generates dispute letter | No | Yes, with citations |
| Works on emergency care | Limited — no choice of provider | Yes |
| Requires advance planning | Yes | No |
| Uses MRF pricing data | Yes | Yes (ClaroBill) |
| Catches duplicate charges | No | Yes |
What price shopping tools do
Tools like Healthcare Bluebook, Castlight, and ClearHealth Costs help patients compare estimated costs across providers before scheduling care. They pull from insurer negotiated rate databases and, since 2021, from hospital machine-readable files.
Price shopping is most effective for elective, schedulable procedures: imaging, lab work, outpatient surgery, and specialist consultations. For emergency care, where you have no meaningful choice of provider, price shopping is not applicable. The No Surprises Act provides the relevant protection in that context.
Price shopping does not help after the bill arrives. It cannot catch duplicate charges, upcoded visit levels, or unbundled procedures in an existing bill.
What medical bill review does
Medical bill review operates on the bill you already have. A tool like ClaroBill takes your itemized statement and checks each charge automatically against applicable benchmarks and billing rules.
Unlike price shopping, bill review catches errors that were introduced in the billing process itself: a coder who assigned the wrong complexity level, a billing system that double-charged a lab test, a procedure that should have been bundled but was not. These errors are independent of which provider you chose. They happen to patients at high-cost and low-cost hospitals alike.
For a complete understanding of how hospital pricing data works and how it can be used both before and after care, see our guide to hospital machine-readable files.
Frequently asked questions
What is the difference between hospital price shopping and medical bill review?
Hospital price shopping is prospective: you compare provider prices before receiving care to find lower-cost options. Medical bill review is retrospective: you audit a bill you have already received to find errors and overcharges. Price shopping tools like Healthcare Bluebook help before care. Bill review tools like ClaroBill help after.
Can I use price shopping data to dispute a bill after the fact?
Sometimes. If you were charged significantly more than the published rate for your insurer in the hospital's machine-readable file, that discrepancy is disputable. For most billing errors, however, the dispute is based on applicable billing rules, standard rates, and error detection rather than price comparison.
Should I use both price shopping and bill review?
Yes, at different stages. Use price shopping tools before scheduling elective procedures to compare facility and provider costs. Use bill review after receiving your itemized bill to check for errors. They are complementary, not competing.