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National Cancer Data Base - Data Dictionary PUF 2014

Boost Treatment Modality

DD_category: 
PUF Data Item Name: 
RAD_BOOST_RX_MODALITY
NAACCR Item #: 
3200
length: 
2
Allowable values: 
00, 20-32, 50-55, 60-62, 98, 99
Description: 
Records the dominant modality of radiation therapy used to deliver the most clinically significant boost dose to the primary volume of interest during the first course of treatment. This is accomplished with external beam fields of reduced size (relative to the regional treatment fields), implants, stereotactic radiosurgery, conformal therapy, or IMRT. External beam boosts may consist of two or more successive phases with progressively smaller fields generally coded as a single entity.
Registry Coding Instructions: 

·Radiation boost treatment modalities 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 that multiple radiation therapy boost modalities were employed during 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 field, photons and x-rays are equivalent

Analytic Note: 

This item was only reported using FORDS diagnosed January 1, 2003, and later.
 

Code

Label

Definition

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.

62

Strontium-90

 

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.