LOINCActiveObservation

LOINC Code 18179-2: Left ventricular Wall segment [Identifier] by US

18179-2 is a LOINC code used to identify Left ventricular Wall segment [Identifier] 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 Wall segment. 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 segment. 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 Wall segment [Identifier] by US
  • Wall segment
  • CARD.US; Cardiac; Cardio; Cardiology; Echography; Heart Disease; Hrt; Hrt ventr; Identity or presence; L; LT; LV; Nominal; Point in time; Random; 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 Wall segment [Identifier] by USLV Wall seg USWall segmentCARD.USPridPtHeart.ventricle.left

Frequently asked questions

Code details

Code18179-2
SystemLOINC
Display nameLeft ventricular Wall segment [Identifier] by US
DescriptionWall segment
Short nameLV Wall seg US
ComponentWall segment
PropertyPrid
TimingPt
System (specimen)Heart.ventricle.left
ScaleNom
MethodUS
ClassCARD.US
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0l
Last changed2.27

Part names

Wall segmentPridPtHeart.ventricle.leftNomUSPresence or IdentityPoint 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 18179-2 | HealthAssure