LOINCActiveObservation

LOINC Code 21703-4: KRAS gene mutations tested for Molgen Nom (Bld/Tiss)

21703-4 is a LOINC code used to identify KRAS gene mutations tested for 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 KRAS gene mutations tested for. 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 KRAS gene mutations tested for. 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

  • KRAS gene mutations tested for in Blood or Tissue by Molecular genetics method Nominal
  • KRAS gene mutations tested for
  • Blood; CFC2; C-K-RAS; Gene mut tested; Genetics; Heredity; Heritable; Identity or presence; Inherited; KI-RAS; Kirsten ras 1; Kirsten rat sarcoma viral oncogene homolog; Kirsten rat sarcoma virus 2; KRAS1; KRAS1P; KRAS2; K-RAS2A; K-RAS2B; K-RAS4A; K-RAS4B; Molecular genetics; Molecular pathology; MOLPATH; MOLPATH.MUTATIONS; Mut; Mut Tested; Mutation; Muts; Nominal; NS; NS3; Oncogene KRAS1; Oncogene KRAS2; PCR; Point in time; Random; RASK1; RASK2; Tissue; Tissue, unspecified; V-KI-RAS1 pseudogene; v-Ki-ras2 Kirsten rat sarcoma 2 viral oncogene homolog; 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

KRAS gene mutations tested for Molgen Nom (Bld/Tiss)KRAS gene mutations tested for in Blood or Tissue by Molecular genetics method NominalKRAS gene Mut Tested Bld/TKRAS gene mutations tested forMOLPATH.MUTKRAS gene variants tested for, Blood or tissue specimenPrid

Frequently asked questions

Code details

Code21703-4
SystemLOINC
Display nameKRAS gene mutations tested for Molgen Nom (Bld/Tiss)
DescriptionKRAS gene mutations tested for
Short nameKRAS gene Mut Tested Bld/T
ComponentKRAS gene mutations tested for
PropertyPrid
TimingPt
System (specimen)Bld/Tiss
ScaleNom
MethodMolgen
ClassMOLPATH.MUT
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0m
Last changed2.73

Consumer names

KRAS gene variants tested for, Blood or tissue specimen

Part names

KRAS gene mutations tested forPridPtBld/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.

LOINC Code 21703-4 | HealthAssure