AHA Coding Clinic® for ICD-9 - 1989 Third Quarter

Myocardial Infarction

Code Revisions Effective October 1, 1989 Effective October 1, 1989, the following fifth-digit sub-classification is for use with category 410, Acute myocardial infarction: Note: For further definitions of myocardial infarction 5th digits, see Coding Clinic, Fourth Quarter, 1992. 0 episode of care unspecified Use when the source document does not contain sufficient information for the assignment of fifth digit 1 or 2. 1 initial episode of care Use to designate the acute phase of care regardless of the location of treatment. Includes cases that are transferred for care and treatment within the acute phase of care. Any subsequent episode...

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