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 79971-8: Interventricular septum Thickness at end systole by US 2D

Name: LOINC Code 79971-8: Interventricular septum Thickness at end systole by US 2D
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:01.838Z

79971-8 is a LOINC code used to identify Interventricular septum Thickness at end systole by US 2D 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 Thickness.end systole. It is commonly used with the system or sample type Heart.interventricular septum.

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 Thickness.end systole. It is commonly used with the system or sample type Heart.interventricular septum.

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: US.2D

What it does not mean

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

Key facts

Interventricular septum Thickness at end systole by US 2D
Thickness.end systole
2D US; CARD.US; CARD.US.DICOM; Cardiac; Cardio; Cardiology; Echography; ES thickness; Heart Disease; Hrt; IS; IVS; IVSs; Length; Point in time; QNT; Quan; Quant; Quantitative; Random; Sonogram; Sonograph; Sonography; Sys; Syst; Thick; ULS; Ultrasound; Ultrasound - 2-dimensional

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

Interventricular septum Thickness at end systole by US 2DIVS ES thickness 2D USThickness.end systoleCARD.US.DICOMLenPtHeart.interventricular septum

Frequently asked questions

Code details

Code79971-8

SystemLOINC

Display nameInterventricular septum Thickness at end systole by US 2D

DescriptionThickness.end systole

Short nameIVS ES thickness 2D US

ComponentThickness.end systole

PropertyLen

TimingPt

System (specimen)Heart.interventricular septum

ScaleQn

MethodUS.2D

ClassCARD.US.DICOM

Example unitscm

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.54

Last changed2.54

Part names

Thickness.end systoleLenPtHeart.interventricular septumQnUS.2DThickness at end systoleLengthPoint in time (spot)Heart interventricular septumUltrasound 2D

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.