LOINCActive

LOINC Code 18840-9: Left ventricular Wall motion index by US Narrative

18840-9 is a LOINC code used to identify Left ventricular Wall motion index by US Narrative 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 Wall motion index. 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 Wall motion index. 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
  • Method: US

What it does not mean

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

Key facts

  • Left ventricular Wall motion index by US Narrative
  • Wall motion index
  • Arbitrary; CARD.US; Cardiac; Cardio; Cardiology; Echography; Heart Disease; Hrt; Hrt ventr; L; LT; LV; Narrative; Point in time; Random; Report; Sonogram; Sonograph; Sonography; ULS; Ultrasound; Ventricular; WM; WMI

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 Wall motion index by US NarrativeLV Wall motion index NAR USWall motion indexCARD.USArbPtHeart.ventricle.left

Frequently asked questions

Code details

Code18840-9
SystemLOINC
Display nameLeft ventricular Wall motion index by US Narrative
DescriptionWall motion index
Short nameLV Wall motion index NAR US
ComponentWall motion index
PropertyArb
TimingPt
System (specimen)Heart.ventricle.left
ScaleNar
MethodUS
ClassCARD.US
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0l
Last changed2.40

Part names

Wall motion indexArbPtHeart.ventricle.leftNarUSArbitraryPoint 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.

LOINC Code 18840-9 | HealthAssure