2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Circulatory System 390-459 > Ischemic Heart Disease 410-414 > ICD-9-CM Diagnosis 411 Other acute and subacute forms of ischemic heart disease 411 is a non-specific code that cannot be used to specify a diagnosis ICD-9-CM Diagnosis 411.0 Postmyocardial infarction syndrome 411.0 is a specific code that can be used to specify a diagnosis 411.0 contains 5 index entries ICD-9-CM Diagnosis 411.1 Intermediate coronary syndrome Precordial pain at rest, which may precede a MYOCARDIAL INFARCTION. 411.1 is a specific code that can be used to specify a diagnosis 411.1 contains 15 index entries ICD-9-CM Diagnosis 411.8 Other acute and subacute forms of ischemic heart disease 411.8 is a non-specific code that cannot be used to specify a diagnosis ICD-9-CM Diagnosis 411.81 Acute coronary occlusion without myocardial infarction 411.81 is a specific code that can be used to specify a diagnosis 411.81 contains 11 index entries ICD-9-CM Diagnosis 411.89 Other acute and subacute forms of ischemic heart disease other 411.89 is a specific code that can be used to specify a diagnosis 411.89 contains 10 index entries