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LOINC Code 59131-3: Atrium Left atrium volume/Right atrium volume by US

59131-3 is a LOINC code used to identify Atrium Left atrium volume/Right atrium volume by US 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 Volume.atrium.left/Volume.atrium.right. It is commonly used with the system or sample type Heart.atria.

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 Volume.atrium.left/Volume.atrium.right. It is commonly used with the system or sample type Heart.atria.

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
  • Method: US

What it does not mean

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

Key facts

  • Atrium Left atrium volume/Right atrium volume by US
  • Volume.atrium.left/Volume.atrium.right
  • Left atrium volume divided by right atrium volume.
  • Atrial; CARD.US; Cardiac; Cardio; Cardiology; Echography; Heart Disease; Hrt; Hrt.atria; L; LA vol; LT; Point in time; QNT; Quan; Quant; Quantitative; R; RA vol; Random; RT; Sonogram; Sonograph; Sonography; ULS; Ultrasound; Vol; Volume ratio

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

Atrium Left atrium volume/Right atrium volume by USHrt.atria LA vol/RA vol USVolume.atrium.left/Volume.atrium.rightCARD.USVRtoPtHeart.atria

Frequently asked questions

Code details

Code59131-3
SystemLOINC
Display nameAtrium Left atrium volume/Right atrium volume by US
DescriptionVolume.atrium.left/Volume.atrium.right
Short nameHrt.atria LA vol/RA vol US
ComponentVolume.atrium.left/Volume.atrium.right
PropertyVRto
TimingPt
System (specimen)Heart.atria
ScaleQn
MethodUS
ClassCARD.US
Example unitsratio
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.32
Last changed2.73

Part names

Volume.atrium.left/Volume.atrium.rightVRtoPtHeart.atriaQnUSVolume RatioPoint in time (spot)Heart atriumUltrasound

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.