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 78179-9: Mitral valve Orifice area by US.2D+Measured by planimetry

Name: LOINC Code 78179-9: Mitral valve Orifice area by US.2D+Measured by planimetry
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:58.755Z

78179-9 is a LOINC code used to identify Mitral valve Orifice area by US.2D+Measured by planimetry 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 Orifice area. It is commonly used with the system or sample type Mitral valve.

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 Orifice area. It is commonly used with the system or sample type Mitral valve.

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+Measured by planimetry

What it does not mean

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

Key facts

Mitral valve Orifice area by US.2D+Measured by planimetry
Orifice area
2D US; CARD.US; Cardio; Cardiology; Echography; Heart Disease; MV; MVA; PLN; Point in time; QNT; Quan; Quant; Quantitative; Random; Sonogram; Sonograph; Sonography; ULS; Ultrasound; Ultrasound - 2-dimensional; US.2D.PLN

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

Mitral valve Orifice area by US.2D+Measured by planimetryMV Orifice area US.2D.PLNOrifice areaCARD.USAreaPtMitral valve

Frequently asked questions

Code details

Code78179-9

SystemLOINC

Display nameMitral valve Orifice area by US.2D+Measured by planimetry

DescriptionOrifice area

Short nameMV Orifice area US.2D.PLN

ComponentOrifice area

PropertyArea

TimingPt

System (specimen)Mitral valve

ScaleQn

MethodUS.2D+Measured by planimetry

ClassCARD.US

Example unitscm2

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.54

Last changed2.67

Part names

Orifice areaAreaPtMitral valveQnUS.2D+Measured by planimetryPoint in time (spot)

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.