LOINCActiveBoth

LOINC Code 21656-4: CFTR gene mutations tested for Molgen Nom (Bld/Tiss)

21656-4 is a LOINC code used to identify CFTR 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 CFTR 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 CFTR 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: Both
  • Method: Molgen

What it does not mean

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

Key facts

  • CFTR gene mutations tested for in Blood or Tissue by Molecular genetics method Nominal
  • CFTR gene mutations tested for
  • ABC35; ABCC7; Blood; CBAVD; CF; CFA; CFTR/MRP; Cystic fibrosis transmembrane conductance regulator; cystic fibrosis transmembrane conductance regulator (ATP-binding cassette sub-family C, member 7); dJ760C5.1; Gene mut tested; Genetics; Heredity; Heritable; Identity or presence; Inherited; Molecular genetics; Molecular pathology; MOLPATH; MOLPATH.MUTATIONS; MRP7; Mut; Mut Tested; Mutation; Muts; Nominal; PCR; Point in time; Random; Tissue; Tissue, unspecified; TNR-CFTR; 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

CFTR gene mutations tested for Molgen Nom (Bld/Tiss)CFTR gene mutations tested for in Blood or Tissue by Molecular genetics method NominalCFTR Mut Tested Bld/TCFTR gene mutations tested forMOLPATH.MUTCFTR gene variants tested for, Blood or tissue specimenPrid

Frequently asked questions

Code details

Code21656-4
SystemLOINC
Display nameCFTR gene mutations tested for Molgen Nom (Bld/Tiss)
DescriptionCFTR gene mutations tested for
Short nameCFTR Mut Tested Bld/T
ComponentCFTR gene mutations tested for
PropertyPrid
TimingPt
System (specimen)Bld/Tiss
ScaleNom
MethodMolgen
ClassMOLPATH.MUT
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

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

Consumer names

CFTR gene variants tested for, Blood or tissue specimen

Part names

CFTR 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 21656-4 | HealthAssure