The Approach External is identified by letter "X" and occupies the 5th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to 08CAX
Extirpation of Matter from Right Choroid, External Approach
Extirpation of Matter from Right Choroid, Open Approach
Extirpation of Matter from Right Choroid, Perc Approach