LOINCActiveBoth

LOINC Code 21677-0: FGFR3 gene p.Gly375Cys Molgen Ql (Bld/Tiss)

21677-0 is a LOINC code used to identify FGFR3 gene p.Gly375Cys Molgen Ql (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 FGFR3 gene.p.Gly375Cys. 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 FGFR3 gene.p.Gly375Cys. 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: Both
  • Method: Molgen

What it does not mean

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

Key facts

  • FGFR3 gene p.Gly375Cys [Presence] in Blood or Tissue by Molecular genetics method
  • FGFR3 gene.p.Gly375Cys
  • ACH; Achondroplasia; Blood; CD333; CEK2; FGFR3 p.G375C; fibroblast growth factor receptor 3; Genetics; Gly375Cys; Heredity; Heritable; HSFGFR3EX; Inherited; JTK4; Molecular genetics; Molecular pathology; MOLPATH; MOLPATH.MUTATIONS; Ordinal; P prime; PCR; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Thanatophoric dwarfism; Thanatophoric dysplasia; 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

FGFR3 gene p.Gly375Cys Molgen Ql (Bld/Tiss)FGFR3 gene p.Gly375Cys [Presence] in Blood or Tissue by Molecular genetics methodFGFR3 p.G375C Bld/T QlFGFR3 gene.p.Gly375CysMOLPATH.MUTFGFR3 gene p.Gly375Cys, Blood or tissue specimenPrThr

Frequently asked questions

Code details

Code21677-0
SystemLOINC
Display nameFGFR3 gene p.Gly375Cys Molgen Ql (Bld/Tiss)
DescriptionFGFR3 gene.p.Gly375Cys
Short nameFGFR3 p.G375C Bld/T Ql
ComponentFGFR3 gene.p.Gly375Cys
PropertyPrThr
TimingPt
System (specimen)Bld/Tiss
ScaleOrd
MethodMolgen
ClassMOLPATH.MUT
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0m
Last changed2.56

Consumer names

FGFR3 gene p.Gly375Cys, Blood or tissue specimen

Part names

FGFR3 gene.p.Gly375CysPrThrPtBld/TissOrdMolgenFGFR3 gene p.Gly375CysPresence or ThresholdPoint 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.