Diagnosis-Related Groups (DRGs) are a hospital payment classification system Medicare uses to group inpatient stays into categories that reflect similar clinical conditions and expected resource use.

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DRG (Diagnosis-Related Group) is a statistical system to classify any inpatient stay into groups for the purposes of payment. Use Codify by AAPC for fast DRG code lookup.

DRG Codes - Diagnosis Related Group Codes List - Codify by AAPC

Diagnosis-related group (DRG) is a system to classify hospital cases into one of originally 467 groups, [1] with the last group (currently coded as 999) being "Ungroupable".

DRGs classify hospital stays by diagnosis to set a fixed Medicare payment, though the actual amount depends on patient complexity and care quality. Diagnosis Related Groups (DRGs) are a classification system that determines how much a hospital gets paid for each inpatient stay.

The DRGs are a patient classification scheme which provides a means of relating the type of patients a hospital treats (i.e., its case mix) to the costs incurred by the hospital. The design and development of the DRGs began in the late sixties at Yale University.