This value set includes codes based on the following rules:

• Include these codes as defined in http://hl7.org/fhir/uv/ichom-breast-cancer/CodeSystem/TreatmentTypesCodeSystem

  Code	Display
  no-treatment	No treatment
  adjuvant-chemotherapy	Adjuvant chemotherapy
  neoadjuvant-chemotherapy	Neoadjuvant chemotherapy
  targeted-therapy	Targeted therapy

• Include these codes as defined in http://snomed.info/sct

  Code	Display
  387713003	Surgical procedure
  699455008	Operative procedure on axilla
  33496007	Reconstruction of breast
  108290001	Radiation oncology AND/OR radiotherapy
  169413002	Hormone therapy
  76334006	Immunotherapy
  243114000	Support

• Include these codes as defined in http://terminology.hl7.org/CodeSystem/v3-NullFlavor

  Code	Display	Definition
  UNK	unknown	**Description:**A proper value is applicable, but not known. **Usage Notes**: This means the actual value is not known. If the only thing that is unknown is how to properly express the value in the necessary constraints (value set, datatype, etc.), then the OTH or UNC flavor should be used. No properties should be included for a datatype with this property unless: 1. Those properties themselves directly translate to a semantic of "unknown". (E.g. a local code sent as a translation that conveys 'unknown') 2. Those properties further qualify the nature of what is unknown. (E.g. specifying a use code of "H" and a URL prefix of "tel:" to convey that it is the home phone number that is unknown.)

This value set contains 12 concepts