LOINCActiveObservation

LOINC Code 71835-3: Oxygen/Gas total [Pure volume fraction] Inhaled gas

71835-3 is a LOINC code used to identify Oxygen/Gas total [Pure volume fraction] Inhaled gas 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. It is commonly used with the system or sample type Inhl gas.

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. It is commonly used with the system or sample type Inhl gas.

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

What it does not mean

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

Key facts

  • Oxygen/Gas total [Pure volume fraction] Inhaled gas
  • Oxygen/Gas.total
  • Because of the confusion that occurs in countries that report results as both decimal fraction and percent, this property was created to represent decimal fractions that are reported without units.
  • CLIN; Gases; IhG; Inhaled Gas; Inspired; O2; Point in time; QNT; Quan; Quant; Quantitative; Random; tO2; Tot; Totl

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/Gas total [Pure volume fraction] Inhaled gasFIO2Oxygen/Gas.totalCLINOxygenVFr.DFPt

Frequently asked questions

Code details

Code71835-3
SystemLOINC
Display nameOxygen/Gas total [Pure volume fraction] Inhaled gas
DescriptionOxygen/Gas.total
Short nameFIO2
ComponentOxygen/Gas.total
PropertyVFr.DF
TimingPt
System (specimen)Inhl gas
ScaleQn
ClassCLIN
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.40
Last changed2.73

Consumer names

Oxygen

Part names

Oxygen/Gas.totalVFr.DFPtInhl gasQnDecimal volume fractionPoint in time (spot)Inhaled gas

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.