LOINCActive

LOINC Code 8817-9: Right ventricular Ejection fraction by Spiral CT

8817-9 is a LOINC code used to identify Right ventricular Ejection fraction by Spiral CT 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 Ejection fraction. It is commonly used with the system or sample type Heart.ventricle.right.

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 Ejection fraction. It is commonly used with the system or sample type Heart.ventricle.right.

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: CT spiral

What it does not mean

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

Key facts

  • Right ventricular Ejection fraction by Spiral CT
  • Ejection fraction
  • Cardiac; Cardio; Cardiology; CAT scan; Computed tomography; Computerized tomography; Computerized tomography spiral; CT scan; EF; Frac; Fract; Fractionation; Fractions; Heart Disease; Hemodynamics; HEMODYNAMICS.MOLEC; Hrt; Hrt ventr; Percent; Point in time; QNT; Quan; Quant; Quantitative; R; Random; RT; RV; Spiral CT; Ventricular; Volfr; Volume fraction

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

Right ventricular Ejection fraction by Spiral CTRV EF Spiral CTEjection fractionHEMODYN.MOLECVFrPtHeart.ventricle.right

Frequently asked questions

Code details

Code8817-9
SystemLOINC
Display nameRight ventricular Ejection fraction by Spiral CT
DescriptionEjection fraction
Short nameRV EF Spiral CT
ComponentEjection fraction
PropertyVFr
TimingPt
System (specimen)Heart.ventricle.right
ScaleQn
MethodCT spiral
ClassHEMODYN.MOLEC
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0h(3)
Last changed2.29

Part names

Ejection fractionVFrPtHeart.ventricle.rightQnCT spiralVolume FractionPoint in time (spot)Heart.ventricle RightComputed tomography spiral

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 8817-9 | HealthAssure