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

**Semantic type:** Finding

**Definition:** Tubular (10-20 mm length) or eccentric or moderate tortuosity of proximal segment or moderately angulated segment, 45-90 degrees or irregular contour or moderate to heavy calcification or ostial in location or bifurcation lesions requiring double guidewires or some thrombus present or total occlusion less than 3 months old. (ACC)

**Synonyms:** - ACC/AHA LESION COMPLEXITY SCORE B - ACC/AHA Lesion Complexity Score B - Medium Risk