CPT 33315 Cardiotomy Exploratory for Removal Mitral Mass

May 18, 2017

Question:

Can exploratory cardiotomy code 33315 be used for a separate incision into the left atrium for removal of subvalvular mitral valve mass (mitral valve left in tact) at the same session as an aortic valve replacement (33405)? "An attempt was made to inspect the mass through the aortic valve annulus; this could not be adequately done. Therefore, the left atrium was opened through the roof... mass was carefully removed." NCCI edits bundled exploratory code 33315 with aortic valve replacement code 33405. Should we append modifier -59?

Question ID: 9333
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