The Isotope None 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 D0073Z
Beam Radiation of Peripheral Nerve using Photons <1 MeV
Beam Radiation of Peripheral Nerve using Heavy Particles
Beam Radiation of Peripheral Nerve using Neutrons
Beam Radiation of Peripheral Nerve using Electrons, Intraop
Beam Radiation of Peripheral Nerve using Photons >10 MeV
Beam Radiation of Peripheral Nerve using Photons 1 - 10 MeV
Beam Radiation of Peripheral Nerve using Neutron Capture
Beam Radiation of Peripheral Nerve using Electrons