User id : 49140 on "Esophageal dilation"

I am unclear on the different types of dilators available for esophageal dilation. What CPT code would you use for the following:

"Scope passed up to middle esophagus, know stricture seen. Wire confirmed in the stomach and CRE balloon used to dilate up to 9mm."

Since a guide wire was used, would you use 43226

Or, since a balloon was used, would you use 43220?

Thanks for you help!