AHA Coding Clinic® for ICD-9 - 1993 Fifth Issue

Coding and Sequencing of Angina and Coronary Heart Disease

Coding guidelines are reviewed and updated throughout the year. These policies may appear in either the Coding Clinic for ICD-9-CM or in the PRO transmittals. If the guidelines presented as a PRO letter contradicts or expands upon previous guidelines published in the Coding Clinic for ICD-9-CM or a PRO transmittal, the more recent PRO letter advice should be followed. The information contained in the following PRO transmittal supersedes advice published in the Third Quarter 1990 issue of Coding Clinic for ICD-9-CM, pages 6-10. ...

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