Ask Dr. Z

I have been told that a true CTO develops with time that it has been closed > 3 months of blockage to be able to use C9607 or 92943. On the OP if it just state CTO intervention(does not state how long blockage has been or collaterals) & one access site used the CPT that was reported was C9601 because I have been told to qualify CPT 92943 or C9607 you need to have 2 access sites so the CTO can be approached both antegrade and retrograde. A second access site that enabled to use the collaterals. If the OP only states CTO and just one access site is used can CPT C9607 or 92943 still be used or C9600 (which does not state CTO).