archetype (adl_version=1.4)
	openEHR-EHR-EVALUATION.differential_diagnosis.v1

concept
	[at0000]	-- Differential diagnoses
language
	original_language = <[ISO_639-1::en]>
description
	original_author = <
		["name"] = <"Sam Heard">
		["organisation"] = <"Ocean Informatics">
		["email"] = <"Sam.Heard@OceanInformatics.com">
		["date"] = <"2004-12-08">
	>
	details = <
		["en"] = <
			language = <[ISO_639-1::en]>
			purpose = <"To express one or more suspected or probable diagnoses, until a single, working diagnosis is determined.">
			use = <"Use to record a set of differential diagnoses that are to be used as part of the diagnostic process.">
			keywords = <"differential", "diagnosis">
			misuse = <"Not to be used to record information about working problems or diagnoses - use EVALUATION.problem.">
			copyright = <"© openEHR Foundation">
		>
	>
	lifecycle_state = <"AuthorDraft">
	other_contributors = <"Dipak Kalra, UCL", "Heather Leslie, Ocean Informatics, Australia">
	other_details = <
		["MD5-CAM-1.0.1"] = <"2138FACD9999C7AC18F2FAAFB96FD062">
	>

definition
	EVALUATION[at0000] matches {	-- Differential diagnoses
		data matches {
			ITEM_TREE[at0001] matches {	-- Tree
				items cardinality matches {1..*; ordered} matches {
					CLUSTER[at0003] occurrences matches {1..*} matches {	-- Differential
						items cardinality matches {1..2; ordered} matches {
							ELEMENT[at0007] matches {	-- Diagnosis
								value matches {
									DV_TEXT matches {*}
								}
							}
							ELEMENT[at0004] occurrences matches {0..1} matches {	-- Likelihood
								value matches {
									DV_CODED_TEXT matches {
										defining_code matches {
											[local::
											at0015, 	-- Suspected
											at0017]	-- Likely
										}
									}
								}
							}
							ELEMENT[at0006] occurrences matches {0..1} matches {	-- Rationale
								value matches {
									DV_TEXT matches {*}
								}
							}
						}
					}
					ELEMENT[at0005] occurrences matches {0..1} matches {	-- Comment
						value matches {
							DV_TEXT matches {*}
						}
					}
				}
			}
		}
		protocol matches {
			ITEM_LIST[at0013] matches {	-- List
				items cardinality matches {0..*; unordered} matches {
					ELEMENT[at0014] occurrences matches {0..*} matches {	-- Reference
						value matches {
							DV_TEXT matches {*}
						}
					}
				}
			}
		}
	}

ontology
	term_definitions = <
		["en"] = <
			items = <
				["at0000"] = <
					text = <"Differential diagnoses">
					description = <"A set of 1 or more diagnoses considered as reasonable but as yet hypothetical causes of the patients signs and symptoms
Set of one or more interim diagnoses that could account for a patient's history, examination findings, measurements and results. In practice, the intent is that as further evidence is gathered differential diagnoses will be eliminated one by one until one diagnosis becomes most likely.">
				>
				["at0001"] = <
					text = <"Tree">
					description = <"@ internal @">
				>
				["at0003"] = <
					text = <"Differential">
					description = <"A group of diagnoses or explanation and likelihoods being considered.">
				>
				["at0004"] = <
					text = <"Likelihood">
					description = <"The likelihood of this diagnosis being present.">
				>
				["at0005"] = <
					text = <"Comment">
					description = <"Comment on the whole set of differential diagnoses.">
					fsn = <"Differential Diagnosis Comment">
				>
				["at0006"] = <
					text = <"Rationale">
					description = <"Rationale for this diagnosis being included as a differential.">
				>
				["at0007"] = <
					text = <"Diagnosis">
					description = <"Identification of diagnosis. It is desirable that this should be coded where possible.">
				>
				["at0013"] = <
					text = <"List">
					description = <"@ internal @">
				>
				["at0014"] = <
					text = <"Reference">
					description = <"Any literary references supporting the diagnoses.">
				>
				["at0015"] = <
					text = <"Suspected">
					description = <"Possibly the diagnosis, but without a weight of supportive evidence.">
				>
				["at0017"] = <
					text = <"Likely">
					description = <"Likely to be the working diagnosis, with good supportive evidence.">
				>
			>
		>
	>