LOINCActive

LOINC Code 19994-3: Oxygen/Total gas setting [Volume Fraction] Ventilator

19994-3 is a LOINC code used to identify Oxygen/Total gas setting [Volume Fraction] Ventilator 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 Oxygen/Gas.total setting. It is commonly used with the system or sample type Ventilator.

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 Oxygen/Gas.total setting. It is commonly used with the system or sample type Ventilator.

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

  • Oxygen/Total gas setting [Volume Fraction] Ventilator
  • Oxygen/Gas.total setting
  • Gases; Lung; O2; O2/gas .tot set; Percent; Point in time; PULMONARY; Pulmonology; QNT; Quan; Quant; Quantitative; Random; Respiratory; tO2; Tot; Total gas setting; Totl; Volfr; Volume fraction

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

Oxygen/Total gas setting [Volume Fraction] VentilatorO2/Total gas setting VFr VentOxygen/Gas.total settingPULMVFrPtVentilator

Frequently asked questions

Code details

Code19994-3
SystemLOINC
Display nameOxygen/Total gas setting [Volume Fraction] Ventilator
DescriptionOxygen/Gas.total setting
Short nameO2/Total gas setting VFr Vent
ComponentOxygen/Gas.total setting
PropertyVFr
TimingPt
System (specimen)Ventilator
ScaleQn
ClassPULM
Example units%
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0l
Last changed2.73

Part names

Oxygen/Gas.total settingVFrPtVentilatorQnVolume FractionPoint in time (spot)

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 19994-3 | HealthAssure