What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActive

LOINC Code 33431-8: Maximum expired volume setting Ventilator alarm

Name: LOINC Code 33431-8: Maximum expired volume setting Ventilator alarm
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:20.069Z

33431-8 is a LOINC code used to identify Maximum expired volume setting Ventilator alarm 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 expired max setting. It is commonly used with the system or sample type Ventilator.alarm.

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 Volume expired max setting. It is commonly used with the system or sample type Ventilator.alarm.

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

Maximum expired volume setting Ventilator alarm

Volume expired max setting

High Minute Ventilation (VE) High Alarm Setting. Vents which use the settingSERVO 900C "Hi VE L/m".

End tidal volume; Flow; Largest; Lung; Maximal; Maximum; Peak; Point in time; PULMONARY; Pulmonology; QNT; Quan; Quant; Quantitative; Random; Respiratory; Vent alarm; Vet; Vol; Vol exp; Vol exp max; Volume Rate; vRate

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

Maximum expired volume setting Ventilator alarmVol exp max Vent alarmVolume expired max settingPULMVRatPtVentilator.alarm

Frequently asked questions

Code details

Code33431-8

SystemLOINC

Display nameMaximum expired volume setting Ventilator alarm

DescriptionVolume expired max setting

Short nameVol exp max Vent alarm

ComponentVolume expired max setting

PropertyVRat

TimingPt

System (specimen)Ventilator.alarm

ScaleQn

ClassPULM

Example unitsL/min

StatusACTIVE

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.09

Last changed2.70

Part names

Volume expired max settingVRatPtVentilator.alarmQnVolume expired maximum settingVolume RatePoint in time (spot)Ventilator alarm

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.