- Radiation treatment modality will typically be found in the radiation oncologist’s summary letter for the first course of treatment. Segregation of treatment components into regional and boost and determination of the respective treatment modality may require assistance from the radiation oncologist to ensure consistent coding.
- In the event multiple radiation therapy modalities were employed in the treatment of the patient, record only the dominant modality.
- Note that in some circumstances the boost treatment may precede the regional treatment.
- For purposes of this data item, photons and x-rays are equivalent.
This item is reported as an optional item per the ROADS manual for cases diagnosed between January 1, 1996, and December 31, 2002, and required thereafter. For cases diagnosed December 31, 2002 and earlier where this item was not reported, an imputed value from the ROADS radiation therapy item (NAACCR Item# 1350) has been used to assign this item.
Codes 80 and 85 retain specific converted descriptions of radiation therapy coded according to ROADS and DAM rules, and were not to be used to record regional radiation for cases diagnosed January 1, 2003, or later.
|00||No radiation treatment||Radiation therapy was not administered to the patient. Diagnosed at autopsy.|
|20||External beam, NOS||The treatment is known to be by external beam, but there is insufficient information to determine the specific modality.|
|21||Orthovoltage||External beam therapy administered using equipment with a maximum energy of less than one (1) million volts (MV). Orthovoltage energies are typically expressed in units of kilovolts (kV).|
|22||Cobalt-60, Cesium-137||External beam therapy using a machine containing either a Cobalt- 60 or Cesium-137 source. Intracavitary use of these sources is coded either 50 or 51.|
|23||Photons (2–5 MV)||External beam therapy using a photon producing machine with beam energy in the range of 2–5 MV.|
|24||Photons (6–10 MV)||External beam therapy using a photon producing machine with beam energy in the range of 6–10 MV.|
|25||Photons (11–19 MV)||External beam therapy using a photon producing machine with beam energy in the range of 11–19 MV.|
|26||Photons (>19 MV)||External beam therapy using a photon producing machine with beam energy of more than 19 MV.|
|27||Photons (mixed energies)||External beam therapy using more than one energy over the course of treatment.|
|28||Electrons||Treatment delivered by electron beam.|
|29||Photons and electrons mixed||Treatment delivered using a combination of photon and electron beams.|
|30||Neutrons, with or without photons/electrons||Treatment delivered using neutron beam.|
|31||IMRT||Intensity modulated radiation therapy, an external beam technique that should be clearly stated in patient record.|
|32||Conformal or 3-D therapy||An external beam technique using multiple, fixed portals shaped to conform to a defined target volume. Should be clearly described as conformal or 3-D therapy in patient record.|
|40||Protons||Treatment delivered using proton therapy.|
|41||Stereotactic radiosurgery, NOS||Treatment delivered using stereotactic radiosurgery, type not specified in patient record.|
|42||Linac radiosurgery||Treatment categorized as using stereotactic technique delivered with a linear accelerator.|
|43||Gamma Knife||Treatment categorized as using stereotactic technique delivered using a Gamma Knife machine.|
|50||Brachytherapy, NOS||Brachytherapy, interstitial implants, molds, seeds, needles, or intracavitary applicators of radioactive materials not otherwise specified.|
|51||Brachytherapy, Intracavitary, LDR||Intracavitary (no direct insertion into tissues) radio-isotope treatment using low dose rate applicators and isotopes (Cesium-137, Fletcher applicator).|
|52||Brachytherapy, Intracavitary, HDR||Intracavitary (no direct insertion into tissues) radioisotope treatment using high dose rate after-loading applicators and isotopes.|
|53||Brachytherapy, Interstitial, LDR||Interstitial (direct insertion into tissues) radioisotope treatment using low dose rate sources.|
|54||Brachytherapy, Interstitial, HDR||Interstitial (direct insertion into tissues) radioisotope treatment using high dose rate sources.|
|55||Radium||Infrequently used for low dose rate (LDR) interstitial and intracavitary therapy.|
|60||Radioisotopes, NOS||Iodine-131, Phosphorus-32, etc.|
|61||Strontium-89||Treatment primarily by intravenous routes for bone metastases.|
|80*||Combination modality, specified*||Combination of external beam radiation and either radioactive implants or radioisotopes*|
|85*||Combination modality, NOS*||Combination of radiation treatment modalities not specified in code 80.*|
|98||Other, NOS||Radiation therapy administered, but the treatment modality is not specified or is unknown.|
|99||Unknown||Radiation therapy administered, treatment volume unknown or not stated in the patient record; it is unknown whether radiation therapy was administered. Death certificate only.|
*see analyst note above