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LOINC Code 77914-0: Mitral valve Effective regurgitant orifice area by US.doppler+Calculated by volumetric method

77914-0 is a LOINC code used to identify Mitral valve Effective regurgitant orifice area by US.doppler+Calculated by volumetric method 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 Effective regurgitant 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 Effective regurgitant 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.doppler+Calculated by volumetric method

What it does not mean

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

Key facts

Mitral valve Effective regurgitant orifice area by US.doppler+Calculated by volumetric method
Effective regurgitant orifice area
The effective regurgitant orifice area (EROA) is the size of the defect where the valve leaflets are not aligning normally (coaptation defect). The severity of regurgitation is related to the EROA. EROA can be calculated by the Volumetric method as regurgitant volume divided by the velocity time integral of the regurgitant jet velocity (VTIRegJet), which is recorded by continuous wave Doppler. [PMID18276823]
Calc; Calculation; CARD.US; Cardio; Cardiology; DOP; DOP+Calc by vol; DUPLEX; Echography; ERO; EROA; Heart Disease; MV; MVA; Point in time; QNT; Quan; Quant; Quantitative; Random; ROA; Sonogram; Sonograph; Sonography; ULS; Ultrasound

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 Effective regurgitant orifice area by US.doppler+Calculated by volumetric methodMV EROA DOP+Calc by volEffective regurgitant orifice areaCARD.USAreaPtMitral valve

Frequently asked questions

Code details

Code77914-0
SystemLOINC
Display nameMitral valve Effective regurgitant orifice area by US.doppler+Calculated by volumetric method
DescriptionEffective regurgitant orifice area
Short nameMV EROA DOP+Calc by vol
ComponentEffective regurgitant orifice area
PropertyArea
TimingPt
System (specimen)Mitral valve
ScaleQn
MethodUS.doppler+Calculated by volumetric method
ClassCARD.US
Example unitscm2
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.52
Last changed2.56

Part names

Effective regurgitant orifice areaAreaPtMitral valveQnUS.doppler+Calculated by volumetric methodPoint 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.