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 78198-9: Heart ventricle Left apex Segmental wall motion by US

Name: LOINC Code 78198-9: Heart ventricle Left apex Segmental wall motion by US
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:58.755Z

78198-9 is a LOINC code used to identify Heart ventricle Left apex Segmental wall motion 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 Segmental wall motion. It is commonly used with the system or sample type Heart.ventricle.left.apex.

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 Segmental wall motion. It is commonly used with the system or sample type Heart.ventricle.left.apex.

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

Heart ventricle Left apex Segmental wall motion by US
Segmental wall motion
CARD.US; Cardiac; Cardio; Cardiology; Echography; Finding; Findings; Heart Disease; Hrt; Hrt ventr; L; LT; LV; LV apex; Ordinal; Point in time; QL; Qual; Qualitative; Random; Screen; Segment; Segment appearance; Sonogram; Sonograph; Sonography; SWM; ULS; Ultrasound; Ventricular; WM

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

Heart ventricle Left apex Segmental wall motion by USLV apex SWM USSegmental wall motionCARD.USFindPtHeart.ventricle.left.apex

Frequently asked questions

Code details

Code78198-9

SystemLOINC

Display nameHeart ventricle Left apex Segmental wall motion by US

DescriptionSegmental wall motion

Short nameLV apex SWM US

ComponentSegmental wall motion

PropertyFind

TimingPt

System (specimen)Heart.ventricle.left.apex

ScaleOrd

MethodUS

ClassCARD.US

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.54

Last changed2.54

Part names

Segmental wall motionFindPtHeart.ventricle.left.apexOrdUSFindingPoint in time (spot)Left ventricular apexUltrasound

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.