Independent pricing tool. Not affiliated with, endorsed by, or operated by CMS or any government agency. Estimates are not a claims determination. The official CMS tool is the CMS Web Pricer at webpricer.cms.gov.

Free first review

Send 20 claim lines. Get each one back priced, step by step.

For health plans, hospitals and physician groups. Each line comes back priced at Medicare, next to what was paid, with every difference explained and flagged, over or under. Just one claim that looks wrong? Price it here first.

You send
Up to 20 lines, or one rate exhibit
Leave out
Names, addresses, member and account IDs, claim numbers, all dates
You get back
A spreadsheet with each line priced and explained, plus a one-page summary
Back in
5 business days after the file arrives
Cost
Free, one per organization. Mutual NDA on request

Pick the review that fits your desk

The column template (CSV) lists every field. Rather not send anything yet? Price up to 10 claims at a time yourself on Batch repricing.

One sample line, priced two ways

A sample stay, not a patient claim: sepsis with MCC (MS-DRG 871), 6 days, discharged home, at a Houston teaching hospital (CCN 450358), FY2027 rates, priced on this site on October 21, 2026. In your review, the MA out-of-network column is replaced by what was actually paid.
LineCodeOriginal MedicareMedicare Advantage (MA) out-of-network ruleDifferenceWhy they differ
1MS-DRG 871$22,392.69$15,842.66$6,550.03The operating teaching add-on (IME) and the per-diem pass-through, which Original Medicare pays the hospital separately for MA enrollees, so the MA rule leaves them out. Expected under the MA out-of-network rule, not a pricing error.
The steps behind the $22,392.69
StepInputAmount
Operating DRG paymentweight 1.9320, wage index 0.9909$13,155.69
Teaching add-on (IME)hospital's teaching factor$1,740.13
Capitalhospital's capital factors$1,156.00
Uncompensated careper-claim amount$1,375.95
Pass-through$801.65 a day × 6 covered days$4,809.90
Value-based purchasingfactor 1.012283$161.59
Readmissions reductionfactor 0.9995−$6.58
Outlier and transfernot reached; full DRG$0.00
Totalrounded steps shown sum to $22,392.68$22,392.69

Read from either side. A plan that paid this out-of-network stay at $22,392.69 would see $6,550.03 flagged as paid above the MA rule; a hospital paid $15,842.66 by an MA plan would see nothing flagged.

Why trust the numbers

5,000 of 5,000test inpatient claims within $1 of the CMS Web Pricer (FY2026 and FY2027 synthetic claims, run October 2026)
$0.22largest gap on any of them; method and file
20+ yearsa payer-side payment-integrity veteran, configuring claim payment

The test set is inpatient. A professional line shows the RVUs, the locality adjustment, the conversion factor and any multiple-procedure, bilateral or assistant cut as separate steps. PayerParity is a small, early-stage company; the free review is how you check us.

How it works

  1. Ask. Fill in the short form below. Don't put claim data in it.
  2. Send. We email you how to send the file, by encrypted email. Lay it out like the template. We take three reviews a week; if we're full, you get a start date before you send anything.
  3. Review. Back within 5 business days of the file arriving: a spreadsheet and a one-page summary.
  4. Decide. If it holds up, the paid step is a full-file audit: the same spreadsheet for every line in the file, with totals by reason. From $2,500, tiered by line count, quoted in writing first. A check after each rate release is $1,500. No obligation.

Request a free review

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Questions

What exactly should the lines contain?

The codes (MS-DRG, CPT/HCPCS, revenue code, modifiers), units or length of stay, discharge status or place of service, the hospital's provider number or the ZIP of the place the service was performed (not the patient's ZIP), the rate year, billed charges, the amounts allowed and paid, and the contract basis. Number the lines 1 to 20. A line is one inpatient stay, or one service line on a professional or outpatient claim. Rate year means the federal fiscal year for inpatient, skilled nursing and other post-acute stays, and the calendar year for professional, outpatient, home health and dialysis lines.

What should I leave out?

Patient names and addresses, member IDs, patient account and record numbers, claim numbers, and every date (birth, admission, discharge, service). Keep the notes column free of patient details. A rate year and length of stay are enough to price an inpatient stay; a rate year is enough for most professional and outpatient lines. If a line depends on the quarter (a drug, a mid-year code, an outlier stay), flag it in the notes column and we'll price it for each quarter of that year. Test claims with no real member behind them can keep their dates; copies of production claims can't.

Do you sign an NDA?

Yes, on request: a mutual NDA, ours or yours, signed before you send anything. Many contracts keep rate exhibits confidential, so check that yours allows sharing with an adviser under NDA.

Why is it free, and what comes after?

Because 20 lines, or one exhibit, you already know the answer to is the fastest way to judge whether the method holds up. If it does, a full-file audit, a check after each rate release, or API access is quoted in writing as a fixed scope before it starts.

Who does the review?

PayerParity, an independent pricing company in Sugar Land, Texas, which runs this site.