LOINCActiveObservation

LOINC Code 18082-8: Left ventricular Minor axis at end systole.apical 4 chamber [Length] by US.M-mode

18082-8 is a LOINC code used to identify Left ventricular Minor axis at end systole.apical 4 chamber [Length] 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 Minor axis.end systole.apical 4 chamber. 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 Minor axis.end systole.apical 4 chamber. 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.M-mode

What it does not mean

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

Key facts

  • Left ventricular Minor axis at end systole.apical 4 chamber [Length] by US.M-mode
  • Minor axis.end systole.apical 4 chamber
  • A4C; ap4; Apical 4CH; CARD.US; Cardiac; Cardio; Cardiology; diam S; Echography; ES; ES minor axis; ES minor axis A4C; Heart Disease; Hrt; Hrt ventr; L; Length; LT; LV; MM; mmode; Point in time; QNT; Quan; Quant; Quantitative; Random; SAX; short axis; Sonogram; Sonograph; Sonography; Sys; Syst; 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 Minor axis at end systole.apical 4 chamber [Length] by US.M-modeLV ES minor axis A4C M-modeMinor axis.end systole.apical 4 chamberCARD.USLenPtHeart.ventricle.left

Frequently asked questions

Code details

Code18082-8
SystemLOINC
Display nameLeft ventricular Minor axis at end systole.apical 4 chamber [Length] by US.M-mode
DescriptionMinor axis.end systole.apical 4 chamber
Short nameLV ES minor axis A4C M-mode
ComponentMinor axis.end systole.apical 4 chamber
PropertyLen
TimingPt
System (specimen)Heart.ventricle.left
ScaleQn
MethodUS.M-mode
ClassCARD.US
Example unitscm
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0l
Last changed2.54

Part names

Minor axis.end systole.apical 4 chamberLenPtHeart.ventricle.leftQnUS.M-modeMinor axis at end systole.apical 4 chamberLengthPoint in time (spot)Heart ventricle - leftUltrasound.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.