The Modality Qualifier Photons 1 is identified by number "1" and occupies the 5th position in the ICD10-PCS procedure code structure.
Below a selection of ICD 10 PCS codes related to DW021
Beam Radiation of Chest using Electrons, Intraoperative
Beam Radiation of Chest using Electrons
Beam Radiation of Chest using Heavy Particles (Protons,Ions)
Beam Radiation of Chest using Photons <1 MeV
Beam Radiation of Chest using Neutron Capture
Beam Radiation of Chest using Photons 1 - 10 MeV
Beam Radiation of Chest using Photons >10 MeV
Beam Radiation of Chest using Neutrons