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.

LOINCActiveObservation

LOINC Code 20344-8: Tricuspid valve annulus Region crossection [Area] by US.calculated

Name: LOINC Code 20344-8: Tricuspid valve annulus Region crossection [Area] by US.calculated
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:28.846Z

20344-8 is a LOINC code used to identify Tricuspid valve annulus Region crossection [Area] by US.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 Region crossection. It is commonly used with the system or sample type Tricuspid valve.annulus.

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 Region crossection. It is commonly used with the system or sample type Tricuspid valve.annulus.

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.calculated

What it does not mean

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

Key facts

Tricuspid valve annulus Region crossection [Area] by US.calculated
Region crossection
Calc; Calculation; CARD.US; Cardio; Cardiology; Echography; Heart Disease; Point in time; QNT; Quan; Quant; Quantitative; Random; Region Xsection; Sonogram; Sonograph; Sonography; TV; TV ann; ULS; Ultrasound; US Calc; US+Calc; Xsection

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

Tricuspid valve annulus Region crossection [Area] by US.calculatedTV ann Region Xsection Area US CalcRegion crossectionCARD.USAreaPtTricuspid valve.annulus

Frequently asked questions

Code details

Code20344-8

SystemLOINC

Display nameTricuspid valve annulus Region crossection [Area] by US.calculated

DescriptionRegion crossection

Short nameTV ann Region Xsection Area US Calc

ComponentRegion crossection

PropertyArea

TimingPt

System (specimen)Tricuspid valve.annulus

ScaleQn

MethodUS.calculated

ClassCARD.US

Example unitscm2

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0m

Last changed2.48

Part names

Region crossectionAreaPtTricuspid valve.annulusQnUS.calculatedPoint in time (spot)Tricuspid valve annulusUltrasound.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.