LOINCActiveObservation

LOINC Code 20348-9: Tricuspid valve orifice Diameter.4 chamber by US

20348-9 is a LOINC code used to identify Tricuspid valve orifice Diameter.4 chamber by US 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 Diameter.4 chamber. It is commonly used with the system or sample type Tricuspid valve.orifice.

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 Diameter.4 chamber. It is commonly used with the system or sample type Tricuspid valve.orifice.

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.measured

What it does not mean

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

Key facts

  • Tricuspid valve orifice Diameter.4 chamber by US
  • Diameter.4 chamber
  • CARD.US; Cardio; Cardiology; DIA; Diam; Diam 4CH; Echography; Heart Disease; Length; Point in time; QNT; Quan; Quant; Quantitative; Random; Sonogram; Sonograph; Sonography; TV; TV orifice; ULS; Ultrasound; US+Meas

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 orifice Diameter.4 chamber by USTV orifice Diam 4CH US.measDiameter.4 chamberCARD.USLenPtTricuspid valve.orifice

Frequently asked questions

Code details

Code20348-9
SystemLOINC
Display nameTricuspid valve orifice Diameter.4 chamber by US
DescriptionDiameter.4 chamber
Short nameTV orifice Diam 4CH US.meas
ComponentDiameter.4 chamber
PropertyLen
TimingPt
System (specimen)Tricuspid valve.orifice
ScaleQn
MethodUS.measured
ClassCARD.US
Example unitscm
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0m
Last changed2.48

Part names

Diameter.4 chamberLenPtTricuspid valve.orificeQnUS.measuredLengthPoint in time (spot)Tricuspid valve orificeUltrasound.measured

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.