MUE - Number of Days or Units of Service Exceeds Acceptable Maximum

CARC/RARC Description
CO-96 Non-covered charge(s). Note: Refer to the 835 Healthcare Policy Identification Segment (loop 2110 Service Payment Information REF), if present.
N362 The number of days or units of service exceeds our acceptable maximum.


Common Reasons for Message

  • Number of days or units billed exceeds acceptable Medically Unlikely Edit (MUE) maximum established by CMS

Next Step

  • View more information about MUEs and gain access to quarterly MUE version update changes
  • Submit an Appeal request - Items or services with this message have appeal rights
    • See Appeals webpage for instructions on how to submit a Reopening or Redetermination

Claim Submission Tips

  • Although CMS publishes most MUE values on its website, other MUE values are confidential and are for CMS and Contractors' use only
  • Report services that are medically reasonable and necessary

View reason code list, return to Reason Code Guidance page.


Last Updated Apr 15, 2020