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.

LOINCActiveObservation

LOINC Code 49040-9: Subtelomere analysis FISH Nar (Bld/Tiss) [Interp]

Name: LOINC Code 49040-9: Subtelomere analysis FISH Nar (Bld/Tiss) [Interp]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:33.170Z

49040-9 is a LOINC code used to identify Subtelomere analysis 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 Subtelomere 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 Subtelomere 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: Observation
Method: FISH

What it does not mean

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

Key facts

Subtelomere analysis [Interpretation] in Blood or Tissue by FISH Narrative
Subtelomere analysis
Blood; Fluorescent in situ hybridization; Genetics; Heredity; Heritable; Impression; Impression/interpretation of study; Impressions; Inherited; Interp; Interpretation; Molecular pathology; MOLPATH; Narrative; Point in time; Random; Report; 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

Subtelomere analysis FISH Nar (Bld/Tiss) [Interp]Subtelomere analysis [Interpretation] in Blood or Tissue by FISH NarrativeSubtelomere analysis Bld/T FISH-ImpSubtelomere analysisMOLPATHInterpretation of Subtelomere analysis test result, Blood or tissue specimenImp

Frequently asked questions

Code details

Code49040-9

SystemLOINC

Display nameSubtelomere analysis FISH Nar (Bld/Tiss) [Interp]

DescriptionSubtelomere analysis

Short nameSubtelomere analysis Bld/T FISH-Imp

ComponentSubtelomere analysis

PropertyImp

TimingPt

System (specimen)Bld/Tiss

ScaleNar

MethodFISH

ClassMOLPATH

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.21

Last changed2.73

Consumer names

Interpretation of Subtelomere analysis test result, Blood or tissue specimen

Part names

Subtelomere analysisImpPtBld/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.