Molecular Definition Implementation Guide for Molecular Data Types, published by HL7 International / Clinical Genomics. This guide is not an authorized publication; it is the continuous build for version 1.0.0-ballot1 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/molecular-definition-data-types/ and changes regularly. See the Directory of published versions
| Official URL: http://hl7.org/fhir/uv/molecular-definition-data-types/ValueSet/nucleotide-dna-1letter-unambiguous | Version: 1.0.0-ballot1 | ||||
| Standards status: Draft Draft as of 2026-03-24 | Maturity Level: 0 | Computable Name: NucleotideDNA1LetterUnambiguous | |||
Single-letter unambiguous symbols for DNA residues.
References
This value set is not used here; it may be used elsewhere (e.g. specifications and/or implementations that use this content)
http://hl7.org/fhir/uv/molecular-definition-data-types/CodeSystem/nucleotide-dna version 📦1.0.0-ballot1| Code | Display | Definition |
| G | Guanine | G |
| A | Adenine | A |
| T | Thymine | T |
| C | Cytosine | C |
Expansion performed internally based on codesystem Nucleotide DNA Symbols v1.0.0-ballot1 (CodeSystem)
This value set contains 4 concepts
| System | Code | Display (en) | Definition | JSON | XML |
http://hl7.org/fhir/uv/molecular-definition-data-types/CodeSystem/nucleotide-dna | G | Guanine | G | ||
http://hl7.org/fhir/uv/molecular-definition-data-types/CodeSystem/nucleotide-dna | A | Adenine | A | ||
http://hl7.org/fhir/uv/molecular-definition-data-types/CodeSystem/nucleotide-dna | T | Thymine | T | ||
http://hl7.org/fhir/uv/molecular-definition-data-types/CodeSystem/nucleotide-dna | C | Cytosine | C |