Table 1.

Examples of concepts by concept class and concept attributes

	Granular (atomic)		Granular (clinical inference)		Relevance		Ambiguous
Concept Class	Yes	No	Yes	No	Yes	No	Yes	No
Diagnoses	Crohn's Disease	pouchitis	Crohn's Disease	Ankylosing Spondylitis	Crohn's Disease	**	UC	Ulcerative Colitis
Signs and Symptoms	Diarrhea	flare	**	weight loss	Diarrhea	**	NT	Non-tender
Procedures	Colonoscopy	surgery	**	Colectomy	Colonoscopy	EGD	Scope	Colonoscopy
Medications	Mesalamine	**	Mesalamine	Steroid	Mesalamine	**	Steroid	Prednisone

** No concept from this use case was identified.

UC = Ulcerative colitis, NT = Non = tender