This value set includes codes based on the following rules:

 <status value="active"/> <date value="2010-03-16"/> <description value="Observation values used to indicate a knowledge subtopic of interest for which knowledge content is requested (e.g., treatment, etiology, prognosis)."/> <compose> <include> <system value="https://www.nlm.nih.gov/mesh"/> <concept> <code value="Q000008"/> </concept> <concept> <code value="Q000744"/> </concept> <concept> <code value="Q000009"/> </concept> <concept> <code value="D004347"/> </concept> <concept> <code value="Q000145"/> </concept> <concept> <code value="Q000209"/> </concept> <concept> <code value="Q000175"/> </concept> <concept> <code value="Q000628"/> </concept> <concept> <code value="D011379"/> </concept> <concept> <code value="Q000627"/> </concept> <concept> <code value="Q000493"/> </concept> <concept> <code value="Q000494"/> </concept> <concept> <code value="Q000633"/> </concept> <concept> <code value="Q000506"/> </concept> </include> <include> <system value="http://snomed.info/sct"/> <concept> <code value="79899007"/> </concept> <concept> <code value="47965005"/> </concept> <concept> <code value="404204005"/> </concept> <concept> <code value="95907004"/> </concept> <concept> <code value="95906008"/> </concept> </include> </compose> </ValueSet>