Percentage and algorithm rates give enough information to derive a dollar amount

§180.50(a)(3)(iii) or §180.50(b)(2)(ii)(C)

What it checks

A rate given as a percentage or formula comes with enough information to work out the dollar amount.

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

How hospitals did

Blocked 12%Couldn't determine 67%Not assessed 21%

Results as of Oct 5, 2026. The most common reasons are on the Standard charges page.

How Care Carta decides

Not applicable when the parsed file has no percentage- or algorithm-based payer rates. Otherwise indeterminate (NEEDS_HUMAN_REVIEW): whether a reasonable person can derive a dollar amount is a judgement the automated check does not make.

Scope: CMS validates structural presence and non-empty algorithm text, not substantive derivability.

Depends on: CareCarta parsed the whole MRF; The MRF has percentage or algorithm rates

Version

Ruleset

hpt-v3, version 3

Last changed in

Ruleset 2

CMS data dictionary

3.0.0

Check ID

hpt.mrf.algorithm_derivable@1

Replaced

hpt.mrf.payer.algorithm_derivability

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