LOINCActiveObservation

LOINC Code 80234-8: A-wave amplitude [Pressure] Right atrium Cardiac catheterization

80234-8 is a LOINC code used to identify A-wave amplitude [Pressure] Right atrium Cardiac catheterization 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 amplitude. It is commonly used with the system or sample type Heart.atrium.right.

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 amplitude. It is commonly used with the system or sample type Heart.atrium.right.

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: Cardiac catheterization

What it does not mean

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

Key facts

  • A-wave amplitude [Pressure] Right atrium Cardiac catheterization
  • A wave amplitude
  • Atrial; Atrial wave; A-wave; a-wave amp; CARD.PROC; Cardiac; Cardio; Cardiology; Heart Disease; Hrt; Point in time; Pressure; QNT; Quan; Quant; Quantitative; R; RA; Random; RAP; RT

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

A-wave amplitude [Pressure] Right atrium Cardiac catheterizationA-wave amp RA Cardiac CathA wave amplitudeCARD.PROCPresPtHeart.atrium.right

Frequently asked questions

Code details

Code80234-8
SystemLOINC
Display nameA-wave amplitude [Pressure] Right atrium Cardiac catheterization
DescriptionA wave amplitude
Short nameA-wave amp RA Cardiac Cath
ComponentA wave amplitude
PropertyPres
TimingPt
System (specimen)Heart.atrium.right
ScaleQn
MethodCardiac catheterization
ClassCARD.PROC
Example unitsmm Hg
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.54
Last changed2.56

Part names

A wave amplitudePresPtHeart.atrium.rightQnCardiac catheterizationA-wave amplitudePressurePoint in time (spot)Heart.atrium Right

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 80234-8 | HealthAssure