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 D7031
Beam Radiation of Neck Lymphatics using Electrons
Beam Radiation of Neck Lymphatics using Neutrons
Beam Radiation of Neck Lymphatics using Photons 1 - 10 MeV
Beam Radiation of Neck Lymphatics using Neutron Capture
Beam Radiation of Neck Lymphatics using Photons >10 MeV
Beam Radiation of Neck Lymphatics using Heavy Particles
Beam Radiation of Neck Lymphatics using Photons <1 MeV
Beam Radiation of Neck Lymphatics using Electrons, Intraop