Changes in the DRG classification system.

§ 412.10 Changes in the DRG classification system.

(a) General rule. CMS issues changes in the DRG classification system in a Federal Register notice at least annually. Except as specified in paragraphs (c) and (d) of this section, the DRG changes are effective prospectively with discharges occurring on or after the same date the payment rates are effective.

(b) Basis for changes in the DRG classification system. All changes in the DRG classification system are made using the principles established for the DRG system. This means that cases are classified so each DRG is—

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