{
  "resourceType": "StructureDefinition",
  "id": "observation-geneticsDNASequenceVariantName",
  "extension": [
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
      "valueCode": "oo"
    },
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
      "valueInteger": 1
    }
  ],
  "url": "http://hl7.org/fhir/StructureDefinition/observation-geneticsDNASequenceVariantName",
  "name": "DNASequenceVariantName",
  "status": "draft",
  "publisher": "Health Level Seven International (Clinical Genomics)",
  "contact": [
    {
      "telecom": [
        {
          "system": "url",
          "value": "http://www.hl7.org/Special/committees/clingenomics"
        }
      ]
    }
  ],
  "description": "Human Genome Variation Society (HGVS) nomenclature for a single or set of DNA Sequence Variation(s) identified in testing.  The use of the nomenclature is also used to describe non-variations (aka. wild types). LOINC Code: ([48004-6](http://loinc.org/48004-6)).",
  "fhirVersion": "3.0.0",
  "mapping": [
    {
      "identity": "rim",
      "uri": "http://hl7.org/v3",
      "name": "RIM Mapping"
    }
  ],
  "kind": "complex-type",
  "abstract": false,
  "contextType": "resource",
  "context": [
    "Observation"
  ],
  "type": "Extension",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "Extension",
        "path": "Extension",
        "short": "HGVS nomenclature for observed DNA sequence variant",
        "definition": "Human Genome Variation Society (HGVS) nomenclature for a single or set of DNA Sequence Variation(s) identified in testing.  The use of the nomenclature is also used to describe non-variations (aka. wild types). LOINC Code: ([48004-6](http://loinc.org/48004-6)).",
        "min": 0,
        "max": "1"
      },
      {
        "id": "Extension.extension",
        "path": "Extension.extension",
        "max": "0"
      },
      {
        "id": "Extension.url",
        "path": "Extension.url",
        "type": [
          {
            "code": "uri"
          }
        ],
        "fixedUri": "http://hl7.org/fhir/StructureDefinition/observation-geneticsDNASequenceVariantName"
      },
      {
        "id": "Extension.valueCodeableConcept",
        "path": "Extension.valueCodeableConcept",
        "type": [
          {
            "code": "CodeableConcept"
          }
        ],
        "binding": {
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName",
              "valueString": "ClinVar-variant-database"
            }
          ],
          "strength": "preferred",
          "description": "NCBI central repository of potentially clinically relevant variants",
          "valueSetUri": "http://www.ncbi.nlm.nih.gov/clinvar/variation"
        }
      }
    ]
  }
}