Clinical Genomics Resource Incubator
0.1.0-ci-build - CI Build International flag

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

CodeSystem: Molecular Definition Topology CodeSystem (Experimental)

Official URL: http://hl7.org/fhir/uv/cg-incubator/CodeSystem/moleculardefinition-topology Version: 0.1.0-ci-build
Standards status: Informative Draft as of 2026-03-23 Maturity Level: 0 Computable Name: MolecularDefinitionTopology
Other Identifiers: OID:2.16.840.1.113883.4.642.4.3003

The structural topology of a molecular entity as defined by the MolecularDefinition resource. Includes linear, circular, linear-discontiguous (gapped), and branched forms.

This Code system is referenced in the definition of the following value sets:

Last updated: 2026-03-23 00:00:00+0000

Profile: Shareable CodeSystem

This case-sensitive code system http://hl7.org/fhir/uv/cg-incubator/CodeSystem/moleculardefinition-topology defines the following codes:

CodeDisplayDefinition
linear Linear Linear, contiguous sequence (e.g., a chromosome segment, allele, or mRNA).
linear-discontiguous Linear discontiguous Linear sequence with gaps; the molecule consists of multiple non-contiguous segments on a linear axis (e.g., a haplotype spanning multiple exons).
circular Circular Circular, contiguous sequence with no free ends (e.g., a plasmid, mitochondrial genome, or circular RNA).
branched Branched Branched molecular structure (e.g., carbohydrate modifications or branched RNA).

Description of the above table(s).