description: This extension is used for indicating the method a provider used to group services, and those providing such services, beyond what may be indicated through DRGs that the payer or patient may find helpful (e.g. grouping services by a standardized episode of care definition). This is provider generated text and should not be modified by the payer. package_name: hl7.fhir.us.davinci derivation: constraint name: ProviderEventMethodology type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'http://hl7.org/fhir/us/davinci-pct/StructureDefinition/providerEventMethodology'} index: 1 value: choices: [valueString] index: 3 valueString: {type: string, choiceOf: value, index: 4} package_version: pct-2.0.0-ballot extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/us/davinci-pct/StructureDefinition/providerEventMethodology base: http://hl7.org/fhir/StructureDefinition/Extension version: 2.0.0-ballot required: [valueString, value]