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 29447-0: Left ventricular posterior wall Thickening.fractional change by US.M-mode

Name: LOINC Code 29447-0: Left ventricular posterior wall Thickening.fractional change by US.M-mode
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:15.474Z

29447-0 is a LOINC code used to identify Left ventricular posterior wall Thickening.fractional change by US.M-mode 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 Thickening.fractional change. It is commonly used with the system or sample type Heart.ventricle.left.posterior wall.

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 Thickening.fractional change. It is commonly used with the system or sample type Heart.ventricle.left.posterior wall.

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.M-mode

What it does not mean

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

Key facts

Left ventricular posterior wall Thickening.fractional change by US.M-mode
Thickening.fractional change
CARD.US; Cardiac; Cardio; Cardiology; Echography; Exchange; Heart Disease; Hrt; Hrt ventr; L; Length Fraction; LT; LV; LV PW; LVPW; LVPWT%; MM; mmode; Percent; Point in time; QNT; Quan; Quant; Quantitative; Random; Replace; Sonogram; Sonograph; Sonography; Thick.fract chng; 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 posterior wall Thickening.fractional change by US.M-modeLVPW Thick.fract chng M-modeThickening.fractional changeCARD.USLenFrPtHeart.ventricle.left.posterior wall

Frequently asked questions

Code details

Code29447-0

SystemLOINC

Display nameLeft ventricular posterior wall Thickening.fractional change by US.M-mode

DescriptionThickening.fractional change

Short nameLVPW Thick.fract chng M-mode

ComponentThickening.fractional change

PropertyLenFr

TimingPt

System (specimen)Heart.ventricle.left.posterior wall

ScaleQn

MethodUS.M-mode

ClassCARD.US

Example units%

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.03

Last changed2.54

Part names

Thickening.fractional changeLenFrPtHeart.ventricle.left.posterior wallQnUS.M-modeLength fractionPoint in time (spot)Heart ventricle Left posterior wallUltrasound.M-mode

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.