Wiki 31535 with 2 biopsies coded once or twice?

[wynonna]

One endoscope was used for epiglottis and epiglottis fold, but 2 biopsies were taken from each of these 2 sections.
Code 31535 once?
Or, with 2 biopsies, code 31535 with 31535 modifier 51?
Thank you

 

[b.cobuzzi]

The MUE for 31535 is 1, so no more than one unit of 31535 can be coded and billed in a single date of service. Only one 31535 can be coded in all circumstances.