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 29449-6: Mitral valve Regurgitant volume by US.doppler+Calculated by PISA method

Name: LOINC Code 29449-6: Mitral valve Regurgitant volume by US.doppler+Calculated by PISA method
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:15.474Z

29449-6 is a LOINC code used to identify Mitral valve Regurgitant volume 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 Regurgitant volume. 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 Regurgitant volume. 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 Regurgitant volume by US.doppler+Calculated by PISA method
Regurgitant volume
Calc; Calculation; CARD.US; Cardio; Cardiology; DOP; DUPLEX; Echography; Heart Disease; MV; Point in time; Proximal Isovelocity Surface Area; QNT; Quan; Quant; Quantitative; Random; Reg vol; Sonogram; Sonograph; Sonography; ULS; Ultrasound; Vol; Volume

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 Regurgitant volume by US.doppler+Calculated by PISA methodMV Reg vol PISARegurgitant volumeCARD.USVolPtMitral valve

Frequently asked questions

Code details

Code29449-6

SystemLOINC

Display nameMitral valve Regurgitant volume by US.doppler+Calculated by PISA method

DescriptionRegurgitant volume

Short nameMV Reg vol PISA

ComponentRegurgitant volume

PropertyVol

TimingPt

System (specimen)Mitral valve

ScaleQn

MethodUS.doppler+Calculated by PISA method

ClassCARD.US

Example unitscm3

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.03

Last changed2.54

Part names

Regurgitant volumeVolPtMitral valveQnUS.doppler+Calculated by PISA methodVolumePoint 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.