LOINCActive

LOINC Code 59112-3: Circulatory system Pulmonary vein A duration/Mitral vave A duration by US

59112-3 is a LOINC code used to identify Circulatory system Pulmonary vein A duration/Mitral vave A duration 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 A wave duration.pulmonary vein/A wave duration.mitral valve. It is commonly used with the system or sample type Circulatory system.

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 A wave duration.pulmonary vein/A wave duration.mitral valve. It is commonly used with the system or sample type Circulatory system.

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

  • Circulatory system Pulmonary vein A duration/Mitral vave A duration by US
  • A wave duration.pulmonary vein/A wave duration.mitral valve
  • Pulmonary vein A-Wave duration divided by Mitral valve A-Wave duration.
  • Atrial wave; A-wave; A-wave duration; CARD.US; Cardio; Cardiology; Circ; Circ sys; Durat; Echography; Heart Disease; MV A dur; Point in time; Pulm; Pulm v A dur; Pulm v A dur - MV A dur; QNT; Quan; Quant; Quantitative; Random; Sonogram; Sonograph; Sonography; Time ratio; ULS; Ultrasound; Ven; Venous

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

Circulatory system Pulmonary vein A duration/Mitral vave A duration by USCirc sys Pulm v A dur/MV A dur USA wave duration.pulmonary vein/A wave duration.mitral valveCARD.USTRtoPtCirculatory system

Frequently asked questions

Code details

Code59112-3
SystemLOINC
Display nameCirculatory system Pulmonary vein A duration/Mitral vave A duration by US
DescriptionA wave duration.pulmonary vein/A wave duration.mitral valve
Short nameCirc sys Pulm v A dur/MV A dur US
ComponentA wave duration.pulmonary vein/A wave duration.mitral valve
PropertyTRto
TimingPt
System (specimen)Circulatory system
ScaleQn
MethodUS
ClassCARD.US
Example unitsratio;index
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.32
Last changed2.69

Part names

A wave duration.pulmonary vein/A wave duration.mitral valveTRtoPtCirculatory systemQnUSTime RatioPoint in time (spot)Ultrasound

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.

LOINC Code 59112-3 | HealthAssure