Hospital Price Transparency Rules: What Patients Must Know in 2026

What a hospital has to publish

Section 180.50(b) sets out the required data elements. For each item and service, the machine-readable file must carry each type of standard charge defined at § 180.20:

• Gross charge — the chargemaster price, before any discount.
• Discounted cash price — the charge that applies to someone paying cash or a cash equivalent.
• Payer-specific negotiated charge — the rate negotiated with a named third-party payer and plan. Plans may be grouped into categories such as "all PPO plans" where the rate is the same across the category.
• De-identified minimum and maximum negotiated charge — the lowest and the highest rate the hospital has negotiated with any payer for that item.

Each entry must also carry the code the hospital uses to bill it and the code type — CPT, HCPCS, DRG, NDC, revenue center code, or another common payer identifier — plus, since January 1 2025, the drug unit and type of measurement for drugs, and any modifier that changes the standard charge along with a description of how it changes it.

Since July 1 2024 the file has had to conform to a CMS template layout, data specification and data dictionary (§ 180.50(c)(2)), which is why files from different hospitals now look broadly alike.

What changed on January 1, 2026

Three requirements took effect at the start of 2026, all in § 180.50:

• An attestation inside the file. The hospital must state that, to the best of its knowledge and belief, it has included all applicable standard-charge information in accordance with § 180.50 and that the encoded information is true, accurate and complete as of the date in the file (§ 180.50(a)(3)(iii)).
• A named accountable executive. The file must encode the name of the hospital chief executive officer, president, or the senior official designated to oversee the encoding of that data (§ 180.50(a)(3)(iv)).
• Percentile allowed amounts. Where a payer-specific negotiated charge is based on a percentage or algorithm rather than a dollar amount, the hospital must calculate and encode the 10th percentile, median and 90th percentile allowed amounts in dollars for that item, together with the number of allowed-amount remittances used to calculate them (§ 180.50(b)(2)(ii)(C)(2)).

The median allowed amount is the most useful of these for a patient. It is the hospital's own statement of what it typically actually collects for that service — a very different number from the chargemaster price on your bill.

How to find and read the file

Section 180.50(d) says where the file has to be and how reachable it has to be. It must sit on a publicly available website, be displayed prominently, be digitally searchable, and be accessible:

• free of charge;
• without establishing a user account or password;
• without submitting personal identifying information;
• to automated searches and direct file download through a link on a public web page.

The file also has to follow a CMS naming convention: <ein>_<hospital-name>_standardcharges.[json|csv]. Searching for that filename pattern is often faster than hunting through a hospital's website menus.

The files are large — tens of thousands of rows is normal. To make one usable:

• Get the exact CPT or HCPCS code off your itemized bill or your Explanation of Benefits first, then search the file for that code rather than for a service name.
• Open the CSV in a spreadsheet and filter rather than scroll.
• Find the column matching your specific plan name, not just your insurer's name — the negotiated rate can differ between plans from the same carrier.
• If you are uninsured or self-pay, go straight to the discounted cash price column.

Separately from the machine-readable file, § 180.60 requires a consumer-friendly display of standard charges for shoppable services, covering as many of the 70 CMS-specified shoppable services as the hospital provides. That display is usually easier to use, but it is narrower — if your service is not one of the shoppable ones, you need the full file.

Comparing the published price against your bill

Request a fully itemized statement first. A summary bill that says "medical services" cannot be compared to anything. Then:

• Match each code on your itemized bill to the same code in the hospital's file.
• Compare the payer-specific negotiated rate for your plan against what the hospital billed your insurer.
• If you are self-pay, compare against the discounted cash price.
• Flag any line where the amount billed exceeds the published rate for your plan.
• Note any code on your bill that does not appear in the file at all, and ask about it.

Signs a hospital may not be complying

Several of these map directly onto the accessibility requirements in § 180.50(d), so they are worth raising specifically:

• No file at all, or the published link is broken.
• The file is behind a login, a password, or a form that asks for your personal details — all three are contrary to § 180.50(d)(3).
• The file is not digitally searchable, or is published only as a scanned document.
• Only gross charges are listed, with no payer-specific negotiated rates.
• Your plan does not appear anywhere in the file even though the hospital says it is in network.

CMS enforces Part 180 and can impose civil monetary penalties on a non-compliant hospital under § 180.90. If you hit any of the problems above, you can report it to CMS through its hospital price transparency pages.

If your bill does not match the published price

A gap between the published rate and your bill is not automatically misconduct — but it is a question the billing office should answer in writing.

• Write to the billing department and cite the specific code, the published rate you found, and the amount billed.
• Ask for a written explanation of the difference.
• Ask your insurer separately to confirm the contracted rate it holds for that service at that facility.
• Report a suspected transparency violation to CMS if the hospital cannot account for the discrepancy.
• Contact your state insurance regulator if the problem is that your insurer did not apply its own negotiated rate.
• Keep every letter, email and call note.