What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveBoth

LOINC Code 78226-8: MLL gene rearrangements FISH Nar (Bld/Tiss) [Interp]

Name: LOINC Code 78226-8: MLL gene rearrangements FISH Nar (Bld/Tiss) [Interp]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:58.755Z

78226-8 is a LOINC code used to identify MLL gene rearrangements FISH Nar (Bld/Tiss) [Interp] 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 MLL gene rearrangements. 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 MLL gene rearrangements. 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: FISH

What it does not mean

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

Key facts

MLL gene rearrangements [Interpretation] in Blood or Tissue by FISH Narrative
MLL gene rearrangements
ALL1; ALL-1; Blood; CXXC7; Fluorescent in situ hybridization; Genetics; Heredity; Heritable; HRX; HTRX; HTRX1; Impression; Impression/interpretation of study; Impressions; Inherited; Interp; Interpretation; lysine (K)-specific methyltransferase 2A; MLL; MLL/GAS7; MLL1; MLL1A; Molecular pathology; MOLPATH; MOLPATH.REARRANGEMENTS; myeloid/lymphoid or mixed-lineage leukemia (trithorax (Drosophila) homolog); Narrative; Point in time; Random; Rearr; Rearrangement; Report; TET1-MLL; Tissue; Tissue, unspecified; TRX1; WB; WDSTS; 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

MLL gene rearrangements FISH Nar (Bld/Tiss) [Interp]MLL gene rearrangements [Interpretation] in Blood or Tissue by FISH NarrativeMLL gene Rear Bld/T FISH-ImpMLL gene rearrangementsMOLPATH.REARRANGEInterpretation of MLL gene rearrangements test result, Blood or tissue specimenImp

Frequently asked questions

Code details

Code78226-8

SystemLOINC

Display nameMLL gene rearrangements FISH Nar (Bld/Tiss) [Interp]

DescriptionMLL gene rearrangements

Short nameMLL gene Rear Bld/T FISH-Imp

ComponentMLL gene rearrangements

PropertyImp

TimingPt

System (specimen)Bld/Tiss

ScaleNar

MethodFISH

ClassMOLPATH.REARRANGE

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.54

Last changed2.73

Consumer names

Interpretation of MLL gene rearrangements test result, Blood or tissue specimen

Part names

MLL gene rearrangementsImpPtBld/TissNarFISHImpression/interpretation of studyPoint in time (spot)Blood or TissueFluorescent in situ hybridization (FISH)

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.