LOINCActiveObservation

LOINC Code 20361-2: Heart valve Region [Area] by US.doppler velocity + area calculated

20361-2 is a LOINC code used to identify Heart valve Region [Area] by US.doppler velocity + area calculated 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 Region. It is commonly used with the system or sample type Heart.valve.XXX.

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 Region. It is commonly used with the system or sample type Heart.valve.XXX.

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.velocity+Area.calculated

What it does not mean

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

Key facts

  • Heart valve Region [Area] by US.doppler velocity + area calculated
  • Region
  • These are nonspecific valve area measurements - not meaningful??
  • Calc; Calculation; CARD.US; Cardiac; Cardio; Cardiology; DOP; DOP.vel+area; DUPLEX; Echography; Heart Disease; Hrt; Misc; Miscellaneous; Other; Point in time; QNT; Quan; Quant; Quantitative; Random; Sonogram; Sonograph; Sonography; Spec; To be specified in another part of the message; ULS; Ultrasound; Unspecified; V,A; Vel

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

Heart valve Region [Area] by US.doppler velocity + area calculatedValve Region Area DOP.vel+areaRegionCARD.USAreaPtHeart.valve.XXX

Frequently asked questions

Code details

Code20361-2
SystemLOINC
Display nameHeart valve Region [Area] by US.doppler velocity + area calculated
DescriptionRegion
Short nameValve Region Area DOP.vel+area
ComponentRegion
PropertyArea
TimingPt
System (specimen)Heart.valve.XXX
ScaleQn
MethodUS.doppler.velocity+Area.calculated
ClassCARD.US
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0m
Last changed2.32

Part names

RegionAreaPtHeart.valve.XXXQnUS.doppler.velocity+Area.calculatedPoint in time (spot)Heart valve XXXUltrasound.doppler.velocity+area.calculated

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.