The Treatment Site Breast, Right is identified by number "1" and occupies the 4th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to DM21
Stereotactic Particulate Radiosurgery of Right Breast
Stereotactic Gamma Beam Radiosurgery of Right Breast
Stereotactic Other Photon Radiosurgery of Right Breast