Cost Allocation Certification. The Cost Allocation Certification remains on file with the Department until there is a change in the Cost Allocation Plan. When the cost allocation plan on file with the program (MDHHS- Medicaid-Outreach), the local health department must: 1) submit a copy of the revised cost allocation plan with the budget request; and 2) complete a revised cost allocation methodology certification. Both documents are to be attached to a Detailed Budget line in EGrAMS.