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