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

CodeSystem: Nucleotide RNA Symbols (Experimental)

Official URL: http://hl7.org/fhir/uv/cg-incubator/CodeSystem/nucleotide-rna Version: 0.1.0-ci-build
Standards status: Informative Draft as of 2026-03-23 Maturity Level: 0 Computable Name: NucleotideRNA

Single-letter unambiguous symbols for RNA residues based on IUPAC nomenclature.

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/nucleotide-rna defines the following codes:

CodeDisplayDefinition
G Guanine G
A Adenine A
U Uracil U
C Cytosine C

Description of the above table(s).