Clinical Genomics Resource Incubator
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Clinical Genomics Resource Incubator, published by HL7 International / Clinical Genomics. This guide is not an authorized publication; it is the continuous build for version 0.1.0-ci-build built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/cg-incubator/ and changes regularly. See the Directory of published versions

: Molecular Definition Type CodeSystem

Page standards status: Informative Maturity Level: 0

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{
  "resourceType" : "CodeSystem",
  "id" : "moleculardefinition-type",
  "meta" : {
    "lastUpdated" : "2026-03-23T00:00:00Z",
    "profile" : [
      🔗 "http://hl7.org/fhir/StructureDefinition/shareablecodesystem"
    ]
  },
  "language" : "en",
  "text" : {
    "status" : "generated",
    "div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p class=\"res-header-id\"><b>Generated Narrative: CodeSystem moleculardefinition-type</b></p><a name=\"moleculardefinition-type\"> </a><a name=\"hcmoleculardefinition-type\"> </a><div style=\"display: inline-block; background-color: #d9e0e7; padding: 6px; margin: 4px; border: 1px solid #8da1b4; border-radius: 5px; line-height: 60%\"><p style=\"margin-bottom: 0px\">Last updated: 2026-03-23 00:00:00+0000</p><p style=\"margin-bottom: 0px\">Profile: <a href=\"http://hl7.org/fhir/R5/shareablecodesystem.html\">Shareable CodeSystem</a></p></div><p>This case-sensitive code system <code>http://hl7.org/fhir/uv/cg-incubator/CodeSystem/moleculardefinition-type</code> defines the following codes:</p><table class=\"codes\"><tr><td style=\"white-space:nowrap\"><b>Code</b></td><td><b>Display</b></td><td><b>Definition</b></td></tr><tr><td style=\"white-space:nowrap\">genomic-dna<a name=\"moleculardefinition-type-genomic-dna\"> </a></td><td>Genomic DNA</td><td>DNA that encodes, or is derived from, the genomic DNA of an organism.</td></tr><tr><td style=\"white-space:nowrap\">cdna<a name=\"moleculardefinition-type-cdna\"> </a></td><td>cDNA</td><td>A DNA molecule synthesized from a mature mRNA template by reverse transcriptase.</td></tr><tr><td style=\"white-space:nowrap\">single-stranded-cdna<a name=\"moleculardefinition-type-single-stranded-cdna\"> </a></td><td>Single-stranded cDNA</td><td>A cDNA molecule that is single-stranded.</td></tr><tr><td style=\"white-space:nowrap\">double-stranded-cdna<a name=\"moleculardefinition-type-double-stranded-cdna\"> </a></td><td>Double-stranded cDNA</td><td>A cDNA molecule that is double-stranded.</td></tr><tr><td style=\"white-space:nowrap\">mitochondrial-dna<a name=\"moleculardefinition-type-mitochondrial-dna\"> </a></td><td>Mitochondrial DNA</td><td>A DNA sequence of mitochondrial origin.</td></tr><tr><td style=\"white-space:nowrap\">mrna<a name=\"moleculardefinition-type-mrna\"> </a></td><td>mRNA</td><td>Messenger RNA; a mature transcript that is translated into protein.</td></tr><tr><td style=\"white-space:nowrap\">rrna<a name=\"moleculardefinition-type-rrna\"> </a></td><td>rRNA</td><td>Ribosomal RNA; a structural component of the ribosome.</td></tr><tr><td style=\"white-space:nowrap\">trna<a name=\"moleculardefinition-type-trna\"> </a></td><td>tRNA</td><td>Transfer RNA; an adaptor molecule for translation.</td></tr><tr><td style=\"white-space:nowrap\">snrna<a name=\"moleculardefinition-type-snrna\"> </a></td><td>snRNA</td><td>Small nuclear RNA; involved in pre-mRNA splicing.</td></tr><tr><td style=\"white-space:nowrap\">snorna<a name=\"moleculardefinition-type-snorna\"> </a></td><td>snoRNA</td><td>Small nucleolar RNA; involved in rRNA modification.</td></tr><tr><td style=\"white-space:nowrap\">mirna<a name=\"moleculardefinition-type-mirna\"> </a></td><td>miRNA</td><td>MicroRNA; a small regulatory RNA that silences gene expression.</td></tr><tr><td style=\"white-space:nowrap\">sirna<a name=\"moleculardefinition-type-sirna\"> </a></td><td>siRNA</td><td>Small interfering RNA; mediates RNA interference.</td></tr><tr><td style=\"white-space:nowrap\">lncrna<a name=\"moleculardefinition-type-lncrna\"> </a></td><td>lncRNA</td><td>Long non-coding RNA; an ncRNA of 200 nucleotides or more with regulatory roles.</td></tr><tr><td style=\"white-space:nowrap\">antisense-rna<a name=\"moleculardefinition-type-antisense-rna\"> </a></td><td>Antisense RNA</td><td>RNA transcribed from the antisense strand of a gene.</td></tr><tr><td style=\"white-space:nowrap\">ncrna<a name=\"moleculardefinition-type-ncrna\"> </a></td><td>ncRNA</td><td>Non-coding RNA; a mature transcript that is not translated into protein.</td></tr><tr><td style=\"white-space:nowrap\">pirna<a name=\"moleculardefinition-type-pirna\"> </a></td><td>piRNA</td><td>PIWI-interacting RNA; involved in transposon silencing in germline cells.</td></tr></table></div>"
  },
  "extension" : [
    {
      "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
      "valueCode" : "cg"
    },
    {
      "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
      "valueCode" : "informative"
    },
    {
      "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
      "valueInteger" : 0
    }
  ],
  "url" : "http://hl7.org/fhir/uv/cg-incubator/CodeSystem/moleculardefinition-type",
  "identifier" : [
    {
      "system" : "urn:ietf:rfc:3986",
      "value" : "urn:oid:2.16.840.1.113883.4.642.4.3002"
    }
  ],
  "version" : "0.1.0-ci-build",
  "name" : "MolecularDefinitionType",
  "title" : "Molecular Definition Type CodeSystem",
  "status" : "draft",
  "experimental" : true,
  "date" : "2026-03-23",
  "publisher" : "HL7 International / Clinical Genomics",
  "contact" : [
    {
      "name" : "HL7 International / Clinical Genomics",
      "telecom" : [
        {
          "system" : "url",
          "value" : "http://www.hl7.org/Special/committees/clingenomics"
        },
        {
          "system" : "email",
          "value" : "clingenomics@lists.hl7.org"
        }
      ]
    }
  ],
  "description" : "Domain-semantic subtype classifications for a MolecularDefinition resource instance, providing greater specificity than the moleculeType element. For example, an instance with moleculeType 'rna' may have a type of 'mrna' or 'mirna'. This CodeSystem is an enumerated, curated set covering clinically relevant DNA and RNA subtypes. The binding on this CodeSystem is extensible: implementers may use codes from other systems when no suitable code exists here.",
  "jurisdiction" : [
    {
      "coding" : [
        {
          "system" : "http://unstats.un.org/unsd/methods/m49/m49.htm",
          "code" : "001",
          "display" : "World"
        }
      ]
    }
  ],
  "caseSensitive" : true,
  "valueSet" : "http://hl7.org/fhir/uv/cg-incubator/ValueSet/moleculardefinition-type",
  "content" : "complete",
  "concept" : [
    {
      "code" : "genomic-dna",
      "display" : "Genomic DNA",
      "definition" : "DNA that encodes, or is derived from, the genomic DNA of an organism."
    },
    {
      "code" : "cdna",
      "display" : "cDNA",
      "definition" : "A DNA molecule synthesized from a mature mRNA template by reverse transcriptase."
    },
    {
      "code" : "single-stranded-cdna",
      "display" : "Single-stranded cDNA",
      "definition" : "A cDNA molecule that is single-stranded."
    },
    {
      "code" : "double-stranded-cdna",
      "display" : "Double-stranded cDNA",
      "definition" : "A cDNA molecule that is double-stranded."
    },
    {
      "code" : "mitochondrial-dna",
      "display" : "Mitochondrial DNA",
      "definition" : "A DNA sequence of mitochondrial origin."
    },
    {
      "code" : "mrna",
      "display" : "mRNA",
      "definition" : "Messenger RNA; a mature transcript that is translated into protein."
    },
    {
      "code" : "rrna",
      "display" : "rRNA",
      "definition" : "Ribosomal RNA; a structural component of the ribosome."
    },
    {
      "code" : "trna",
      "display" : "tRNA",
      "definition" : "Transfer RNA; an adaptor molecule for translation."
    },
    {
      "code" : "snrna",
      "display" : "snRNA",
      "definition" : "Small nuclear RNA; involved in pre-mRNA splicing."
    },
    {
      "code" : "snorna",
      "display" : "snoRNA",
      "definition" : "Small nucleolar RNA; involved in rRNA modification."
    },
    {
      "code" : "mirna",
      "display" : "miRNA",
      "definition" : "MicroRNA; a small regulatory RNA that silences gene expression."
    },
    {
      "code" : "sirna",
      "display" : "siRNA",
      "definition" : "Small interfering RNA; mediates RNA interference."
    },
    {
      "code" : "lncrna",
      "display" : "lncRNA",
      "definition" : "Long non-coding RNA; an ncRNA of 200 nucleotides or more with regulatory roles."
    },
    {
      "code" : "antisense-rna",
      "display" : "Antisense RNA",
      "definition" : "RNA transcribed from the antisense strand of a gene."
    },
    {
      "code" : "ncrna",
      "display" : "ncRNA",
      "definition" : "Non-coding RNA; a mature transcript that is not translated into protein."
    },
    {
      "code" : "pirna",
      "display" : "piRNA",
      "definition" : "PIWI-interacting RNA; involved in transposon silencing in germline cells."
    }
  ]
}