LOINCActiveObservation

LOINC Code 81400-4: Left ventricular Maximum radial strain by US 2D

81400-4 is a LOINC code used to identify Left ventricular Maximum radial strain by US 2D 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 Radial strain.max. 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 Radial strain.max. 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.2D

What it does not mean

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

Key facts

  • Left ventricular Maximum radial strain by US 2D
  • Radial strain.max
  • 2D US; CARD.US; Cardiac; Cardio; Cardiology; Echography; Heart Disease; Hrt; Hrt ventr; L; Largest; Length Ratio; LT; LV; Max radial strain; Max strain; Maximal; Maximum; Peak; Point in time; QNT; Quan; Quant; Quantitative; Random; Sonogram; Sonograph; Sonography; ULS; Ultrasound; Ultrasound - 2-dimensional; 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 Maximum radial strain by US 2DLV Max radial strain 2D USRadial strain.maxCARD.USLenRtoPtHeart.ventricle.left

Frequently asked questions

Code details

Code81400-4
SystemLOINC
Display nameLeft ventricular Maximum radial strain by US 2D
DescriptionRadial strain.max
Short nameLV Max radial strain 2D US
ComponentRadial strain.max
PropertyLenRto
TimingPt
System (specimen)Heart.ventricle.left
ScaleQn
MethodUS.2D
ClassCARD.US
Example units%
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.56
Last changed2.71

Part names

Radial strain.maxLenRtoPtHeart.ventricle.leftQnUS.2DMaximum radial strainLength RatioPoint in time (spot)Heart ventricle - leftUltrasound 2D

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 81400-4 | HealthAssure