Reminder-Upcoming Pause in Configuration Changes

The Office of MaineCare Services is launching an upgraded MIHMS, our claims processing system, in mid-October 2026. To support system readiness activities, as previously communicated, MaineCare must temporarily pause the implementation of configuration changes from the end of August to the end of October.

Providers are encouraged to continue submitting the requests during this period as noted in the table below. 

Request Type

Continue Submitting/Contacting

MaineCare Action During Configuration Pause

Coding and NDC Requests

Coding: OMS.referencefile@maine.gov

NDC/J-Code: MaineCareNDCrequest.DHHS@maine.gov 

MaineCare will continue to review new requests throughout the configuration pause and will write change requests (CRs) as appropriate during this period. Once the configuration pause is lifted, we will begin implementation of the CRs .  

Rate Change Requests

MIHMSRateRqst.DHHS@maine.gov

MaineCare will continue to review new requests throughout the configuration pause and will write CRs as appropriate during this period. Once the configuration pause is lifted, we will begin implementation of the CRs.  

Claims and Billing

Provider Services: 1-866-690-5585

MaineCare will continue reviewing claim denials to determine whether a configuration change is needed. If a change is needed, we will write a CR. Once the configuration pause is lifted, we will begin implementation of the CRs. 

We appreciate your continued cooperation during this transition. If you have questions about the configuration pause, please contact your Provider Relations Specialist.