description: This template represents the earliest date of diagnosis, which is the date of first determination by a qualified professional of the presence of a problem or condition affecting a patient. An encounter diagnosis date may be different than this Date of Diagnosis.\n\nThe date of diagnosis is usually not the same date as the date of condition onset. A patient may have a condition for some time before it is formally diagnosed. package_name: hl7.cda.us.ccda derivation: constraint name: DateOfDiagnosisAct type: http://hl7.org/cda/stds/core/StructureDefinition/Act elements: templateId: index: 0 slicing: rules: open discriminator: - {path: root, type: value} - {path: extension, type: value} min: 1 slices: date-of-diagnosis-act: match: {root: 2.16.840.1.113883.10.20.22.4.502, extension: '2022-06-01'} schema: _required: true index: 1 elements: root: pattern: {type: String, value: 2.16.840.1.113883.10.20.22.4.502} index: 2 extension: pattern: {type: String, value: '2022-06-01'} index: 3 required: [root, extension] extensions: {} classCode: pattern: {type: Code, value: ACT} index: 4 moodCode: pattern: {type: Code, value: EVN} index: 5 code: index: 6 elements: code: pattern: {type: Code, value: 77975-1} index: 7 codeSystem: pattern: {type: String, value: 2.16.840.1.113883.6.1} index: 8 required: [codeSystem] text: short: SHOULD reference the portion of section narrative text corresponding to this entry index: 9 elements: reference: constraint: value-starts-octothorpe: {human: 'If reference/@value is present, it SHALL begin with a ''#'' and SHALL point to its corresponding narrative', source: 'http://hl7.org/cda/us/ccda/StructureDefinition/DateOfDiagnosisAct', severity: error, expression: value.exists() implies value.startsWith('#')} index: 10 statusCode: index: 11 elements: code: pattern: {type: Code, value: completed} index: 12 required: [code] effectiveTime: constraint: ts-shall-year: {human: '**SHALL** be precise to at least the year', source: 'http://hl7.org/cda/us/ccda/StructureDefinition/DateOfDiagnosisAct', severity: error, expression: nullFlavor.exists() or value.toString().length() >= 4} index: 13 elements: value: {index: 14} low: {index: 15} high: {index: 16} required: [value] package_version: 3.0.0-ballot class: logical kind: logical url: http://hl7.org/cda/us/ccda/StructureDefinition/DateOfDiagnosisAct base: http://hl7.org/cda/stds/core/StructureDefinition/Act version: 3.0.0-ballot required: [effectiveTime, statusCode, templateId]