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Table 6 Cardiovascular risk levels and codes, modified based on NCEP ATP III guidelines

From: Clinical and economic burden associated with cardiovascular events among patients with hyperlipidemia: a retrospective cohort study

Risk Level   Code
History of CV event Myocardial infarction ICD-9-CM: 410, 412
Unstable angina ICD-9-CM: 411.1, 411.81, 411.89
Coronary artery bypass graft CPT-4: 33503-33545
Percutaneous coronary intervention ICD-9 Procedure: 00.66, 36.09
Ischemic Stroke ICD-9 CM: 434, 436, 437.0, 437.1, 438, 997.02
Modified CHD RE Peripheral arterial disease ICD-9-CM: 440.0x-440.4x, 440.8x-440.9x, 443.81, 443.9x
Abdominal aortic aneurysm ICD-9-CM: 441.3x-441.4x
Coronary artery disease ICD-9-CM: 433.1x
Diabetes ICD-9-CM: 249.xx-250.xx
Dyslipidemia ICD-9-CM: 272.0x-272.4x
Moderate risk At least two of the following three risk factors identifiable from administrative claims data:
a) hypertension (ICD-9-CM code or pharmacy claim for a blood pressure–lowering agent),
b) age 45 years or older for men and 55 years or older for women
c) pre-index high-density lipoprotein (HDL) cholesterol below 40 mg/dl.
Hypertension: ICD-9-CM codes 401.1-401.9, 642.00-642.04, 401.0, 437.2, 402.00-405.99, 642.10-642.24, 642.70-642.94
Low risk Zero or one risk factor
  1. CHD RE coronary heart disease risk equivalent, CV cardiovascular, ICD-9-CM International Classifications of Diseases, 9th Revision Clinical Modifications, CPT Current Procedural Terminology, NCEPATP III National Cholesterol Education Program Adult Treatment Panel III