Rejection/Denial Messages 
 
Please go to the Billing Manuals page, then select Appendices. Appendix N contains the Rejection/Denial Messages.
 
 
Colorado Medicaid Eligibility Response System (CMERS)/FAXBACK Eligibility (06/2007) - This document contains instructions on how to use and access the CMERS and FAXBACK Medicaid Eligibility systems. 
 
Provider Affiliation Interface Layouts - This document contains file specifications intended for PHPs to affiliate their network of providers and to update those affiliations. This affiliation information is used in processing PHP encounters. Please see Request File Layout, Response File Layout, and PHP Affiliation Codes 
 
Request File Layout - Pre-Paid Health Plan Provider Affiliation Request Interface (300 byte record)
 
Response File Layout - MMIS Provider Affiliation Response Interface (450 Byte Record)
 
PHP Affiliation Codes - County Codes, Provider Affiliation, Status Codes, Provider Type Codes, Provider Specialty Codes, MMIS Response Descriptions, MMIS Response Codes