LOINCActiveObservation

LOINC Code 94415-7: OPRM1 gene c.118A>G genotype Molgen (Bld/Tiss)

94415-7 is a LOINC code used to identify OPRM1 gene c.118A>G genotype Molgen (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 OPRM1 gene.c.118A>G. 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 OPRM1 gene.c.118A>G. 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

OPRM1 gene c.118A>G [Genotype] in Blood or Tissue by Molecular genetics method Nominal
OPRM1 gene.c.118A>G
The patient's genotype (e.g. G/G) for the c.118A>G (rs1799971) variant in the OPRM1 gene. Patients with AG or GG genotypes have a higher responsiveness to opioids and required less analgesic drugs in laboring women when treated with fentanyl in women as compared to genotype AA.[PMID18403122][PharmGKB Variant ID: 1183703081]
Asn40Asp; Blood; Genetics; Heredity; Heritable; Inherited; Molecular genetics; Molecular pathology; MOLPATH; MOLPATH.PHARMG; Nominal; OPRM1 c.118A>G; PCR; Point in time; Random; rs1799971; 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

OPRM1 gene c.118A>G genotype Molgen (Bld/Tiss)OPRM1 gene c.118A>G [Genotype] in Blood or Tissue by Molecular genetics method NominalOPRM1 c.118A>G Geno Bld/TOPRM1 gene.c.118A>GMOLPATH.PHARMGOPRM1 gene c.118A>G genotype, Blood or tissue specimenGeno

Frequently asked questions

Code details

Code94415-7
SystemLOINC
Display nameOPRM1 gene c.118A>G genotype Molgen (Bld/Tiss)
DescriptionOPRM1 gene.c.118A>G
Short nameOPRM1 c.118A>G Geno Bld/T
ComponentOPRM1 gene.c.118A>G
PropertyGeno
TimingPt
System (specimen)Bld/Tiss
ScaleNom
MethodMolgen
ClassMOLPATH.PHARMG
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

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

Consumer names

OPRM1 gene c.118A>G genotype, Blood or tissue specimen

Part names

OPRM1 gene.c.118A>GGenoPtBld/TissNomMolgenOPRM1 gene c.118A>GGenotypePoint 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 94415-7 | HealthAssure