The doctor performed a salivary duct cannulation, salivary duct dilation, sialendoscopy, and salivary duct kenalog injection. I have code 42650 for the salivary duct dilation and I can't find a code for salivary duct cannulation. I found code 42660 Dilation and catheterization of salivary duct. Does anyone know if either of those codes include the cannulation? I tried doing some research but couldn't find a clear answer. For the sialendoscopy, I can only find the unlisted code 42699 but I'm trying to figure out a CPT code to compare to it. Any ideas of a comparable code for a sialendoscopy? Thanks!