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 D9010Z
Beam Radiation of Nose using Neutron Capture
Beam Radiation of Nose using Heavy Particles (Protons,Ions)
Beam Radiation of Nose using Electrons, Intraoperative
Beam Radiation of Nose using Photons 1 - 10 MeV
Beam Radiation of Nose using Electrons
Beam Radiation of Nose using Photons <1 MeV
Beam Radiation of Nose using Neutrons
Beam Radiation of Nose using Photons >10 MeV