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 DP006Z
Beam Radiation of Skull using Electrons, Intraoperative
Beam Radiation of Skull using Neutrons
Beam Radiation of Skull using Electrons
Beam Radiation of Skull using Photons >10 MeV
Beam Radiation of Skull using Neutron Capture
Beam Radiation of Skull using Photons <1 MeV
Beam Radiation of Skull using Heavy Particles (Protons,Ions)
Beam Radiation of Skull using Photons 1 - 10 MeV