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 D0066Z
Beam Radiation of Spinal Cord using Photons >10 MeV
Beam Radiation of Spinal Cord using Neutron Capture
Beam Radiation of Spinal Cord using Photons 1 - 10 MeV
Beam Radiation of Spinal Cord using Electrons
Beam Radiation of Spinal Cord using Heavy Particles
Beam Radiation of Spinal Cord using Photons <1 MeV
Beam Radiation of Spinal Cord using Electrons, Intraop
Beam Radiation of Spinal Cord using Neutrons