LOINCActiveObservation

LOINC Code 20317-4: Left ventricular Stroke volume index 4 chamber by US 2D modified single-plane ellipse calculated

20317-4 is a LOINC code used to identify Left ventricular Stroke volume index 4 chamber by US 2D modified single-plane ellipse calculated 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 Stroke volume/Body surface area.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 Stroke volume/Body surface area.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.2D.mod.single-plane ellipse.calculated

What it does not mean

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

Key facts

  • Left ventricular Stroke volume index 4 chamber by US 2D modified single-plane ellipse calculated
  • Stroke volume/Body surface area.4 chamber
  • 2D US; Bdy surface; bod; Bodies; BSA; BSA 4cham; Calc; Calculation; CARD.US; Cardiac; Cardiac output/Heart beat; Cardio; Cardiology; Echography; Heart Disease; Hrt; Hrt ventr; L; LT; LV; Method of discs; Method of disks; MOD-SP; MOD-SP4; Point in time; QNT; Quan; Quant; Quantitative; Random; Sonogram; Sonograph; Sonography; SP-EL; Surf; SV; ULS; Ultrasound; Ultrasound - 2-dimensional; US.2D.MOD-SP; Us.2D.MOD-SP-EL; Ventricular; Vol; Volume/area

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 Stroke volume index 4 chamber by US 2D modified single-plane ellipse calculatedLV Stroke index 4cham US.2D.MOD-SP-ELStroke volume/Body surface area.4 chamberCARD.USArVolPtHeart.ventricle.left

Frequently asked questions

Code details

Code20317-4
SystemLOINC
Display nameLeft ventricular Stroke volume index 4 chamber by US 2D modified single-plane ellipse calculated
DescriptionStroke volume/Body surface area.4 chamber
Short nameLV Stroke index 4cham US.2D.MOD-SP-EL
ComponentStroke volume/Body surface area.4 chamber
PropertyArVol
TimingPt
System (specimen)Heart.ventricle.left
ScaleQn
MethodUS.2D.mod.single-plane ellipse.calculated
ClassCARD.US
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0m
Last changed2.30

Part names

Stroke volume/Body surface area.4 chamberArVolPtHeart.ventricle.leftQnUS.2D.mod.single-plane ellipse.calculatedVolume/AreaPoint in time (spot)Heart ventricle - leftUltrasound 2D.mod.single-plane ellipse.calculated

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.