The Body Part Intracranial Vein is identified by letter "L" and occupies the 4th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to 055L
Destruction of Intracranial Vein, Open Approach
Destruction of Intracranial Vein, Percutaneous Approach
Destruction of Intracranial Vein, Perc Endo Approach