MRF lists every applicable modifier and its charges

What it checks

The price file lists every modifier that changes an item's price, and the charges that go with it.

Checked by Care Carta. Care Carta's own check, for a requirement CMS's validator does not test.

How hospitals did

Results as of Oct 5, 2026. The most common reasons are on the Billing and coding information page.

How Care Carta decides

Never decided (NEEDS_OUTSIDE_EVIDENCE, shown as Not assessed): the file alone cannot show that every applicable modifier and its charges are listed.

Scope: CMS validates encoded modifier structure but cannot establish that all applicable unencoded modifiers were disclosed.

Depends on: CareCarta parsed the whole MRF

Version

Today's results all use this ruleset. A check never changes without a new ruleset. Full catalog (JSON)