A new proposed simplified classification of coronary artery bifurcation lesions and bifurcation interventional techniques

Mohammad Reza Movahed, Curtiss T. Stinis

Research output: Contribution to journalArticlepeer-review

47 Scopus citations


Current classification systems of coronary bifurcation lesions are confusing and difficult to memorize. As coronary revascularization techniques become increasingly complex, it is important to establish a universal classification system. This manuscript proposes a simplified classification system that uses a combination of letters and numbers to provide a clinically relevant anatomic description of a given coronary artery bifurcation lesion. This classification consists of the prefix B (for Bifurcation lesion), followed by the addition of 4 separate suffixes. The first suffix consists of one of the letters C, N, S, or L. C = Close to the bifurcation: the lesion is close to a bifurcation, but the distance from the carina is more than the width of the plaque protruding into the lumen; N = Bifurcation lesion with one branch being Nonsignificant: nonsignificant being defined as less than 2.0 mm vessel diameter; S = Small proximal segment; or L = Large proximal segment: large defined as more than two-thirds of the sum of the diameters of both branch vessels. The second suffix describes the number of diseased ostia. 1M = only the Main vessel ostium is involved; 1S = only the Side branch ostium is involved; or 2 = both ostia are involved. The third suffix classifies the angle between the bifurcation vessels and uses the letters V or T; V = the angle between the two branches is less than 70 degrees, T = angle more than 70 degrees. The fourth suffixes are optional: CA for calcified, LM for left main involvement.

Original languageEnglish (US)
Pages (from-to)199-204
Number of pages6
JournalJournal of Invasive Cardiology
Issue number5
StatePublished - May 2006


  • Classification
  • Coronary bifurcation
  • PCI
  • Percutaneous coronary intervention
  • Stenting

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Cardiology and Cardiovascular Medicine


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