This value set includes codes based on the following rules:

• Include these codes as defined in http://snomed.info/sct version Not Stated (use latest from terminology server)

  Code	Display
  76752008	Breast structure
  78904004	Chest wall structure
  68171009	Axillary lymph node structure
  76838003	Structure of supraclavicular lymph node
  245282001	Internal mammary lymph node group
  263601005	Site of tumor
  277671009	Intraoperative

• Include these codes as defined in http://terminology.hl7.org/CodeSystem/v3-NullFlavor version 📦3.0.0

  Code	Display	Definition
  OTH	other	**Description:**The actual value is not a member of the set of permitted data values in the constrained value domain of a variable. (e.g., concept not provided by required code system). **Usage Notes**: This flavor and its specializations are most commonly used with the CD datatype and its flavors. However, it may apply to \*any\* datatype where the constraints of the type are tighter than can be conveyed. For example, a PQ that is for a true measured amount whose units are not supported in UCUM, a need to convey a REAL when the type has been constrained to INT, etc. With coded datatypes, this null flavor may only be used if the vocabulary binding has a coding strength of CNE. By definition, all local codes and original text are part of the value set if the coding strength is CWE.
  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 9 concepts