LOINCActive

LOINC Code 8584-5: Pulmonary artery wedge A-wave amplitude

8584-5 is a LOINC code used to identify Pulmonary artery wedge A-wave amplitude 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 Pulmonary artery.wedge.

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 Pulmonary artery.wedge.

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

What it does not mean

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

Key facts

  • Pulmonary artery wedge A-wave amplitude
  • A wave amplitude
  • Art; Atrial wave; A-wave; a-wave amp; BLOOD PRESSURE MEASUREMENTS.VENOUS.MOLEC; Cardio; Cardiology; Heart Disease; PA; PAP; PAW; PAWP; PCWP; Point in time; Pressure; Pulmonary capillary wedge pressure; QNT; Quan; Quant; Quantitative; Random; 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

Pulmonary artery wedge A-wave amplitudePAW A-wave ampA wave amplitudeBP.VENOUS.MOLECPresPtPulmonary artery.wedge

Frequently asked questions

Code details

Code8584-5
SystemLOINC
Display namePulmonary artery wedge A-wave amplitude
DescriptionA wave amplitude
Short namePAW A-wave amp
ComponentA wave amplitude
PropertyPres
TimingPt
System (specimen)Pulmonary artery.wedge
ScaleQn
ClassBP.VENOUS.MOLEC
Example unitscm H2O
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0h(3)
Last changed2.54

Part names

A wave amplitudePresPtPulmonary artery.wedgeQnA-wave amplitudePressurePoint in time (spot)Pulmonary artery wedge

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.