What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActive

LOINC Code 8738-7: Left ventricular Cardiac output by MR

Name: LOINC Code 8738-7: Left ventricular Cardiac output by MR
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:15.845Z

8738-7 is a LOINC code used to identify Left ventricular Cardiac output by MR 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 Cardiac output. 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 Cardiac output. 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: MR

What it does not mean

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

Key facts

Left ventricular Cardiac output by MR
Cardiac output
Cardiac; Cardio; Cardiology; CO; Flow; Heart Disease; Hemodynamics; HEMODYNAMICS.MOLEC; Hrt; Hrt ventr; L; LT; LV; Mitral regurgitation maximum velocity; MRI; Point in time; QNT; Quan; Quant; Quantitative; Rad; Radiology; Random; Ventricular; Volume rate; vRate

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 Cardiac output by MRLV Output MRCardiac outputHEMODYN.MOLECVRatPtHeart.ventricle.left

Frequently asked questions

Code details

Code8738-7

SystemLOINC

Display nameLeft ventricular Cardiac output by MR

DescriptionCardiac output

Short nameLV Output MR

ComponentCardiac output

PropertyVRat

TimingPt

System (specimen)Heart.ventricle.left

ScaleQn

MethodMR

ClassHEMODYN.MOLEC

Example unitsL/min

StatusACTIVE

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0h(3)

Last changed2.56

Part names

Cardiac outputVRatPtHeart.ventricle.leftQnMRVolume RatePoint in time (spot)Heart ventricle - leftMagnetic resonance

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.