The Device No Device is identified by letter "Z" and occupies the 6th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to 03N04Z
Release Right Internal Mammary Artery, Open Approach
Release Right Internal Mammary Artery, Perc Endo Approach
Release Right Internal Mammary Artery, Percutaneous Approach