American College of Cardiology/American Heart Association Lesion Complexity Score A

**Semantic type:** Finding

**Definition:** Discrete (less than 10 mm length) and concentric and readily accessible and non-angulated segment less than 45 degrees and smooth contour and little or no calcification and less than totally occlusive and not ostial in location and no major branch involvement and absence of thrombus. (ACC)

**Synonyms:** - ACC/AHA LESION COMPLEXITY SCORE A - ACC/AHA Lesion Complexity Score A - Low Risk