Determining RICs Case Mix Group Admitting nurse uses the Liaison Admission Form to determine if the patient is a Rehabilitation Candidate, determining whether the patient has insurance payment ability. Once approved the liaison schedules admission. The physician uses the H&P Examination Form to document the exam. This includes: 13 H&P Forms covering 21 RICs categories, Comorbidities contributing to the impairment or disability as well as correct wording for physician diagnosis reimbursement. Determines the FIM Score - the key element to determining the Case Mix Group. The worksheet addresses the Assessment of Activities of Daily Living and the level of the patient's independence. All of this information is necessary in determining the correct Case Mix Group (CMG) for your patient's stay, and assigning the patient a specific payment amount for the stay. An error in this documentation process could result in inadequate funds for the services rendered.