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 79994-0: Left ventricular Length at end diastole by US.2D.A4C

Name: LOINC Code 79994-0: Left ventricular Length at end diastole by US.2D.A4C
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:01.838Z

79994-0 is a LOINC code used to identify Left ventricular Length at end diastole by US.2D.A4C 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 Length.end diastole. It is commonly used with the system or sample type Heart.ventricle.left.

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 Length.end diastole. It is commonly used with the system or sample type Heart.ventricle.left.

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.A4C

What it does not mean

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

Key facts

Left ventricular Length at end diastole by US.2D.A4C
Length.end diastole
2D US; CARD.US; CARD.US.DICOM; Cardiac; Cardio; Cardiology; Dias; Diast; Diastoli; Echography; ED; ED length; Heart Disease; Hrt; Hrt ventr; L; Len; Length; LT; LV; Point in time; QNT; Quan; Quant; Quantitative; Random; Sonogram; Sonograph; Sonography; ULS; Ultrasound; Ultrasound - 2-dimensional; Ventricular

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

Left ventricular Length at end diastole by US.2D.A4CLV ED length A4CLength.end diastoleCARD.US.DICOMLenPtHeart.ventricle.left

Frequently asked questions

Code details

Code79994-0

SystemLOINC

Display nameLeft ventricular Length at end diastole by US.2D.A4C

DescriptionLength.end diastole

Short nameLV ED length A4C

ComponentLength.end diastole

PropertyLen

TimingPt

System (specimen)Heart.ventricle.left

ScaleQn

MethodUS.2D.A4C

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

Length.end diastoleLenPtHeart.ventricle.leftQnUS.2D.A4CLength at end diastoleLengthPoint in time (spot)Heart ventricle - left

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.