The Operation Assistance is identified by letter "A" and occupies the 3rd position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to X2A
Cereb Deflct Filtr in Aort Arch, Perc Approach, New Tech 5
Cereb Filtr, Brach L Carotid Art, Perc, New Tech 2