LOINCActiveObservation

LOINC Code 29448-8: Mitral valve Effective regurgitant orifice area by US.doppler+Calculated by PISA method

29448-8 is a LOINC code used to identify Mitral valve Effective regurgitant orifice area by US.doppler+Calculated by PISA 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 PISA 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 PISA method
  • Effective regurgitant orifice area
  • Calc; Calculation; CARD.US; Cardio; Cardiology; DOP; DUPLEX; Echography; ERO; EROA; Heart Disease; MV; MVA; Point in time; Proximal Isovelocity Surface Area; 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 PISA methodMV EROA PISAEffective regurgitant orifice areaCARD.USAreaPtMitral valve

Frequently asked questions

Code details

Code29448-8
SystemLOINC
Display nameMitral valve Effective regurgitant orifice area by US.doppler+Calculated by PISA method
DescriptionEffective regurgitant orifice area
Short nameMV EROA PISA
ComponentEffective regurgitant orifice area
PropertyArea
TimingPt
System (specimen)Mitral valve
ScaleQn
MethodUS.doppler+Calculated by PISA method
ClassCARD.US
Example unitscm2
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.03
Last changed2.56

Part names

Effective regurgitant orifice areaAreaPtMitral valveQnUS.doppler+Calculated by PISA 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.