Information for Critical Access Hospitals

The critical access hospital (CAH) bills for facility and professional outpatient services only when physicians or practitioners reassign their billing rights to the CAH.

Learn how CAHs can prevent Fiscal Intermediary Shared System (FISS) reason codes 31006 and 31007 (indicating that providers don’t have a reassignment on file in the Provider Enrollment, Chain, and Ownership System (PECOS)) claim denials:

  • CAHsmust submit the reassignment application through PECOS or the paper FormCMS-855I
  • Startingin January 2026, we’ll deny CAH claims for professional services if areassignment isn’t in PECOS

More Information:

Source: CMS MLN Connects dated August 21, 2025

Last Updated $dateUtil.getDate( $modifieddate , "MMM dd , yyyy" , $locale , $tzone )