The Body Part Trochlear Nerve is identified by letter "J" and occupies the 4th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to 00DJ
Extraction of Trochlear Nerve, Open Approach
Extraction of Trochlear Nerve, Perc Endo Approach
Extraction of Trochlear Nerve, Percutaneous Approach