{

"resourceType": "SearchParameter",
"id": "observation-genetic-Observation-dna-variant",
"url": "http://hl7.org/fhir/SearchParameter/observation-genetic-Observation-dna-variant",
"version": "4.0.1",
"name": "dna-variant",
"status": "draft",
"experimental": true,
"description": "HGVS DNA variant",
"code": "dna-variant",
"base": [
  "Observation"
],
"type": "string",
"expression": "Observation.extension('http://hl7.org/fhir/StructureDefinition/observation-geneticsDnaVariant')",
"xpathUsage": "normal"

}