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.
| Name | Flags | Card | Type | Description & Constraints |
|---|---|---|---|---|
Extension | 0..1 | Copy number variation | ||
| ?..0 | ||||
| ?..? | ||||
| 1..? | ||||
| 1..? | CodeableConcept |