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LOINC Code 48013-7: Genomic reference sequence Nom (Bld/Tiss) [ID]

48013-7 is a LOINC code used to identify Genomic reference sequence Nom (Bld/Tiss) [ID] in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Genomic reference sequence identifier. It is commonly used with the system or sample type Bld/Tiss.

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Genomic reference sequence identifier. It is commonly used with the system or sample type Bld/Tiss.

When is it used?

  • Used in lab systems, EHRs, and clinical data exchange.
  • May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
  • Status: ACTIVE
  • Order vs observation: Observation

What it does not mean

  • The code identifies the observation or test, not the actual result.

Key facts

Genomic reference sequence [ID]
Genomic reference sequence identifier
This field carries the ID for the genomic reference sequence. The genomic reference sequence is a contiguous stretch of chromosome DNA that spans all of the exons of the gene and includes transcribed and non transcribed stretches. For this ID use either the NCBI genomic nucleotide RefSeq IDs with their version number (seeNCBI.NLM.NIH.Gov/RefSeq) or use the LRG identifiers, without transcript (t or p) extensions -- when they become available. (See- Report sponsored by GEN2PHEN at the European Bioinformatics Institute at Hinxton UK April 24-25, 2008). The NCI RefSeq genomic IDs are distinguished by a prefix of"NG" for genes from the nuclear chromosomes and prefix of "NC" for genes from mitochondria. The LRG Identifiers have a prefix of "LRG_" Mitochondrial genes are not in the scope of LRG
Blood; Genetic; Genetics; Genomic; Heredity; Heritable; HL7.GENETICS; Ident; Identifier; Inherited; MOLPATH.GENERAL; Nominal; Point in time; Random; Ref Sequence; Reference sequence ID; RefSeq; Tissue; Tissue, unspecified; WB; Whole blood; Whole blood or Tissue

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Genomic reference sequence Nom (Bld/Tiss) [ID]Genomic reference sequence [ID]Genomic reference sequence IDGenomic reference sequence identifierHL7.GENETICSGenomic reference sequence, Blood or tissue specimenID

Frequently asked questions

Code details

Code48013-7
SystemLOINC
Display nameGenomic reference sequence Nom (Bld/Tiss) [ID]
DescriptionGenomic reference sequence identifier
Short nameGenomic reference sequence ID
ComponentGenomic reference sequence identifier
PropertyID
TimingPt
System (specimen)Bld/Tiss
ScaleNom
ClassHL7.GENETICS
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.21
Last changed2.58

Consumer names

Genomic reference sequence, Blood or tissue specimen

Part names

Genomic reference sequence identifierIDPtBld/TissNomIdentifierPoint in time (spot)Blood or Tissue

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

LOINC Code 48013-7 | HealthAssure