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 DM001
Beam Radiation of Left Breast using Heavy Particles
Beam Radiation of Left Breast using Photons <1 MeV
Beam Radiation of Left Breast using Neutron Capture
Beam Radiation of Left Breast using Neutrons
Beam Radiation of Left Breast using Photons 1 - 10 MeV
Beam Radiation of Left Breast using Electrons
Beam Radiation of Left Breast using Electrons, Intraop
Beam Radiation of Left Breast using Photons >10 MeV