Plus: 93923 replaces 93922 in a key parenthetical note, and your index needs an update, too. If you've been wondering why your CPT Codes's atherectomy index entry doesn't point out your percutaneous options, you've got a good eye. The answer is simple. Everyone makes mistakes. The AMA noted the problem and has published that and several other corrections to its CPT 2011 manual. Checking the AMA errata for such corrections is very mportant, says Denae M. Merrill, CPC, HCC coding pecialist in Saginaw, Mich. Take the time to mark the ollowing three in your manual, or you'll risk reporting he wrong code or not meeting key requirements. 1. Don't Let 93268-93272 Typo Lead to Noncompliance CPT guidelines for Cardiovascular Monitoring Services all just before 93224-93278 in your manual. As ublished, the first paragraph of the guidelines state: "Event monitors (93268-93272) ... do not require attended surveillance." Correction: 2. Watch Change to 93923 Upper + Lower Rule Along with correcting several minor typos in the updated 93922-93923 (... bilateral noninvasive physiologic studies of upper or lower extremity arteries ...) definitions and guidelines, the AMA makes one correction you want to be sure you catch. The second parenthetical note under 93923 (complete study), as published, states: "Report 93923 only once in the upper extremity(s) and/or once in the lower extremity(s). When both the upper and lower extremities are evaluated in the same setting, 93922 may be reported twice adding modifier 59 to the second procedure)." Correction: Bonus tip: 3. Avoid Index Confusion for These Revascularization Codes With all of the changes to revascularization coding, you don't need index mistakes adding to the puzzle. As published, the Atherectomy entry reads: Open Femoral . . . . . . . . . 37225, 37227 Popliteal . . . . . . . . .37225, 37227 Tibioperoneal . . . . .37233, 37235 Coronary . . . . . . . . .92995-92996 See Artery, Coronary Femoral . . . . . . . . . 37225, 37227 Popliteal . . . . . . . . .37225, 37227 Tibioperoneal . . . . .37233, 37235 Correction: Smart move: