LOINCActiveObservation

LOINC Code 53045-1: Reference sequence alteration Molgen Nom (Bld/Tiss)

53045-1 is a LOINC code used to identify Reference sequence alteration Molgen Nom (Bld/Tiss) 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 Reference sequence alteration. 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 Reference sequence alteration. 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
  • Method: Molgen

What it does not mean

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

Key facts

  • Reference sequence alteration [Identifier]
  • Reference sequence alteration
  • Human Genome Variation Society (HGVS) nomenclature for conveying an alteration to the associated reference sequences used to define the genome as a basis for comparison with actual results.
  • Blood; Genetic; Genetics; Genomic; HL7.GENETICS; Identity or presence; Molecular genetics; MOLPATH.GENERAL; Nominal; PCR; Point in time; Random; Ref Sequence; Ref sequence alteration; 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

Reference sequence alteration Molgen Nom (Bld/Tiss)Reference sequence alteration [Identifier]Ref sequence alterationReference sequence alterationHL7.GENETICSReference sequence alteration, Blood or tissue specimenPrid

Frequently asked questions

Code details

Code53045-1
SystemLOINC
Display nameReference sequence alteration Molgen Nom (Bld/Tiss)
DescriptionReference sequence alteration
Short nameRef sequence alteration
ComponentReference sequence alteration
PropertyPrid
TimingPt
System (specimen)Bld/Tiss
ScaleNom
MethodMolgen
ClassHL7.GENETICS
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.24
Last changed2.68

Consumer names

Reference sequence alteration, Blood or tissue specimen

Part names

Reference sequence alterationPridPtBld/TissNomMolgenPresence or IdentityPoint in time (spot)Blood or TissueMolecular genetics

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.