45 CFR § 180.50 - Requirements for making public hospital standard charges for all items and services.
(a) General rules.
(2) Each hospital location operating under a single hospital license (or approval) that has a different set of standard charges than the other location(s) operating under the same hospital license (or approval) must separately make public the standard charges applicable to that location.
(b) Required data elements. A hospital must include all of the following corresponding data elements in its list of standard charges, as applicable:
(1) Description of each item or service provided by the hospital.
(3) Payer-specific negotiated charge that applies to each item or service when provided in, as applicable, the hospital inpatient setting and outpatient department setting. Each payer-specific negotiated charge must be clearly associated with the name of the third party payer and plan.
(7) Any code used by the hospital for purposes of accounting or billing for the item or service, including, but not limited to, the Current Procedural Terminology (CPT) code, the Healthcare Common Procedure Coding System (HCPCS) code, the Diagnosis Related Group (DRG), the National Drug Code (NDC), or other common payer identifier.
(d) Location and accessibility.
(i) Free of charge;
(ii) Without having to establish a user account or password; and
(iii) Without having to submit personal identifying information (PII).
(4) The digital file and standard charge information contained in that file must be digitally searchable.
(5) The file must use the following naming convention specified by CMS, specifically: <ein>_<hospital-name>_standardcharges.[json|xml|csv].
(e) Frequency of updates. The hospital must update the standard charge information described in paragraph (b) of this section at least once annually. The hospital must clearly indicate the date that the standard charge data was most recently updated, either within the file itself or otherwise clearly associated with the file.