LOINCActiveBoth

LOINC Code 81420-2: KRAS and NRAS gene targeted mutation analysis Molgen Nom (Bld/Tiss)

81420-2 is a LOINC code used to identify KRAS and NRAS gene targeted mutation analysis 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 & NRAS gene targeted mutation analysis. 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 & NRAS gene targeted mutation analysis. 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

  • KRAS and NRAS gene mutations found [Identifier] in Blood or Tissue by Molecular genetics method Nominal
  • KRAS & NRAS gene targeted mutation analysis
  • This assay will detect mutations in exons 2, 3 and 4 of both the KRAS and NRAS genes, allowing the determination of drug response. This term was created for, but not limited in use to, the ABI PRISM SNaPshot Multiplex Kit.
  • ALPS4; Blood; CMNS; Genetics; Heredity; Heritable; Identity or presence; Inherited; KRAS + NRAS; Molecular genetics; Molecular pathology; MOLPATH; MOLPATH.MUTATIONS; Mut; Mut Anl; Mutations; NCMS; neuroblastoma RAS viral (v-ras) oncogene homolog; Nominal; N-ras; NRAS1; NS6; Oncogene NRAS; PCR; Point in time; Random; Tissue; Tissue, unspecified; v-ras neuroblastoma RAS 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 and NRAS gene targeted mutation analysis Molgen Nom (Bld/Tiss)KRAS and NRAS gene mutations found [Identifier] in Blood or Tissue by Molecular genetics method NominalKRAS + NRAS Mut Anl Bld/TKRAS & NRAS gene targeted mutation analysisMOLPATH.MUTKRAS and NRAS gene targeted mutation analysis, Blood or tissue specimenPrid

Frequently asked questions

Code details

Code81420-2
SystemLOINC
Display nameKRAS and NRAS gene targeted mutation analysis Molgen Nom (Bld/Tiss)
DescriptionKRAS & NRAS gene targeted mutation analysis
Short nameKRAS + NRAS Mut Anl Bld/T
ComponentKRAS & NRAS gene targeted mutation analysis
PropertyPrid
TimingPt
System (specimen)Bld/Tiss
ScaleNom
MethodMolgen
ClassMOLPATH.MUT
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.56
Last changed2.73

Consumer names

KRAS and NRAS gene targeted mutation analysis, Blood or tissue specimen

Part names

KRAS & NRAS gene targeted mutation analysisPridPtBld/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.