a system of classifying hospital patients on the basis of diagnosis, consisting of distinct groupings. A DRG assignment to a case is based on the patientâ€(tm)s 1) principal diagnosis; 2) treatment procedures performed; 3) age; 4) gender; 5) discharge status.

Diagnosis related groups; system introduced to control rising medical cost under which hospitals are reimbursed for costs of caring for patients based on the primary diagnosis of the patients and what is considered to be a fair value for treatment of usual patients with those diagnoses.

Diagnosis Related Groups Distinct categories of diseases that are the basis for Medicare's financial reimbursement to hospitals.