• The element RadiationProcedure.code (in mCODE profile CancerRelatedRadiationProcedure) is bound (binding strength = extensible) to a value set named RadiationProcedureVS.
• The CancerRelatedRadiationProcedure profile description is “A radiological treatment addressing a cancer condition.”
• The value set definition (content logical definition) contains modality codes, and the text definition is “Codes describing radiation therapy procedures. The value set includes a limited set of radiation modality codes…”
• “Modality” is defined as the type of radiation used to deliver treatment (e.g., photons, protons, brachytherapy). 
• There is a disconnect between the 1) the purpose of the profile and 2) the value set content logical definition, as well as
• 1) name of the value set, 2) the textual definition of the value set, and 3) the codes in the value set.
• The CodeX Radiation Therapy use case is in the midst of demonstrating and expanding mCODE in the radiation therapy clinical domain. The team anticipates suggesting an approach to rectify this disconnect after engaging with radiation stakeholders involved in the use case. Potential approaches under consideration include:

1) Retain the name of the existing VS (i.e., Radiation Procedure VS), replace existing codes with SCT codes where concept is-a # 53438000 “Radiation therapy procedure or service (procedure)”, and create a new VS definition. If this option is selected, a new mCODE element will need to be created to express “RadiationModality”.

OR

2) Change the name of the existing VS to Radiation Modality VS, update the profile description (or retire existing and create new with a new name) and create a new VS definition