Alternate Name Item # Length Source of Standard Implemented Year Implemented Version Retired Year Retired Version Column #
Regional Treatment Modality (CoC)
1570 2 CoC 1607 - 1608
Description
Records the dominant modality of radiation therapy used to deliver the clinically most significant regional dose to the primary volume of interest during the first course of treatment.
Rationale
Radiation treatment frequently is delivered in two or more phases that can be summarized as regional and boost treatments. To evaluate patterns of radiation oncology care, it is necessary to know which radiation resources were employed in the delivery of therapy. For outcomes analysis, the modalities used for each of these phases can be very important.
Codes
00 No radiation treatment
20 External beam, NOS
21 Orthovoltage
22 Cobalt-60, Cesium-137
23 Photons (2-5 MV)
24 Photons (6-10 MV)
25 Photons (11-19 MV)
26 Photons (> 19 MV)
27 Photons (mixed energies)
28 Electrons
29 Photons and electrons mixed
30 Neutrons, with or without photons/electrons
31 IMRT
32 Conformal or 3-D therapy
40 Protons
41 Stereotactic radiosurgery, NOS
42 Linac radiosurgery
43 Gamma Knife
50 Brachytherapy, NOS
51 Brachytherapy, Intracavitary, Low Dose Rate (LDR)
52 Brachytherapy, Intracavitary, High Dose Rate (HDR)
53 Brachytherapy, Interstitial, Low Dose Rate (LDR)
54 Brachytherapy, Interstitial, High Dose Rate (HDR)
55 Radium
60 Radio-isotopes, NOS
61 Strontium - 89
62 Strontium - 90
80* Combination modality, specified
85* Combination modality, NOS
98 Other, NOS
99 Unknown

Note: For tumors diagnosed prior to January 1, 2003, the codes reported in this data item describe any radiation administered to the patient as part or all of the first course of therapy.

*Codes 80 and 85 describe specific converted descriptions of radiation therapy coded according to Volume II ROADS, and DAM rules and should only be used to record regional radiation for tumors diagnosed prior to January 1, 2003.