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 29436-3: Left ventricular Internal diameter minor axis diastole by US

Name: LOINC Code 29436-3: Left ventricular Internal diameter minor axis diastole by US
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:15.474Z

29436-3 is a LOINC code used to identify Left ventricular Internal diameter minor axis diastole by US 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 Internal diameter.minor axis.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 Internal diameter.minor axis.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

What it does not mean

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

Key facts

Left ventricular Internal diameter minor axis diastole by US
Internal diameter.minor axis.diastole
CARD.US; Cardiac; Cardio; Cardiology; DIA; Diam; diam D; Diam dias, short; Dias; Diast; Diastoli; Echography; Heart Disease; Hrt; Hrt ventr; L; Length; LT; LV; LVIDd; Point in time; QNT; Quan; Quant; Quantitative; Random; SAX; short axis; Sonogram; Sonograph; Sonography; ULS; Ultrasound; 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 Internal diameter minor axis diastole by USLV Diam dias, short USInternal diameter.minor axis.diastoleCARD.USLenPtHeart.ventricle.left

Frequently asked questions

Code details

Code29436-3

SystemLOINC

Display nameLeft ventricular Internal diameter minor axis diastole by US

DescriptionInternal diameter.minor axis.diastole

Short nameLV Diam dias, short US

ComponentInternal diameter.minor axis.diastole

PropertyLen

TimingPt

System (specimen)Heart.ventricle.left

ScaleQn

MethodUS

ClassCARD.US

Example unitscm

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.03

Last changed2.73

Part names

Internal diameter.minor axis.diastoleLenPtHeart.ventricle.leftQnUSInternal diameter minor axis diastoleLengthPoint in time (spot)Heart ventricle - leftUltrasound

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.