http://hl7.org/fhir/StructureDefinition/observation-geneticsCopyNumberEvent|5.2.0
A variation that increases or decreases the copy number of a given region ([SO:0001019](http://www.sequenceontology.org/browser/current_svn/term/SO:0001019)). Values: amplification/deletion/LOH.
| type | destination |
|---|---|
| baseDefinition | http://hl7.org/fhir/StructureDefinition/Extension |
| type | http://hl7.org/fhir/StructureDefinition/Extension |
| Extension.value[x].type | http://hl7.org/fhir/StructureDefinition/CodeableConcept |