Division of Aortic Valve, Perc Approach, Native Leaflet

This code represents a percutaneous cutting or separation of the native leaflets of the aortic valve, performed via a transcatheter approach without open surgical access. The procedure is distinct from valve replacement or repair; the root operation "Division" indicates the leaflet tissue itself is being cut or transected. This is most commonly associated with balloon aortic valvuloplasty techniques or transcatheter procedures that mechanically disrupt fused or stenotic leaflet commissures.

Apply this code when documentation specifies percutaneous division, splitting, or commissurotomy of the native aortic valve leaflets — for example, in the context of aortic stenosis where leaflet fusion is being mechanically disrupted. The qualifier "Native Leaflet" is critical: this code applies only when the patient's own valve tissue is being acted upon, not a previously implanted prosthetic valve. Supporting documentation should include operative/procedure notes specifying the percutaneous access route, the target structure (aortic valve leaflets), and the nature of the intervention as cutting or division rather than dilation alone.

• Distinguish from dilation: Balloon aortic valvuloplasty that stretches the valve annulus without explicit leaflet division may be better captured under the root operation "Dilation" — review procedure notes carefully for language indicating leaflet cutting versus simple dilation.
• Native vs. prosthetic distinction: If the patient has a previously implanted bioprosthetic or mechanical aortic valve, the "Native Leaflet" qualifier does not apply; a different qualifier would be required, reflecting the prosthetic device.
• Approach verification: Confirm true percutaneous access (typically transfemoral or transapical catheter-based); if the chest is opened or a thoracoscopic port is used, the approach character would differ, changing the code entirely.