LOINCActiveBoth

LOINC Code 61018-8: Oxygen [VFr/PPres] Gas delivery system

61018-8 is a LOINC code used to identify Oxygen [VFr/PPres] Gas delivery system 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. It is commonly used with the system or sample type Gas delivery system.

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. It is commonly used with the system or sample type Gas delivery system.

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: Both

What it does not mean

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

Key facts

  • Oxygen [VFr/PPres] Gas delivery system
  • Oxygen
  • The IEEE 11073 Standards Committee does not distinguish between measures of gas concentration reported as partial pressure and volume percent because they can be converted from one to the other under the law of gases. To make it clear that these could be reported either way, LOINC presents the property for these terms as both a volume fraction and a partial pressure (VFr/PPres), with corresponding units of %{vol} and mm[Hg], respectively.
  • Gas DS; Gases; Lung; O2; O2 partial pressure; PO2; Point in time; PULMONARY; Pulmonology; QNT; Quan; Quant; Quantitative; Random; Respiratory; tO2

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 [VFr/PPres] Gas delivery systemO2 VFr/PPres Gas DSOxygenPULMVFr/PPresPtGas delivery system

Frequently asked questions

Code details

Code61018-8
SystemLOINC
Display nameOxygen [VFr/PPres] Gas delivery system
DescriptionOxygen
Short nameO2 VFr/PPres Gas DS
ComponentOxygen
PropertyVFr/PPres
TimingPt
System (specimen)Gas delivery system
ScaleQn
ClassPULM
Example units%{vol}; mm[Hg]
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.56
Last changed2.70

Part names

OxygenVFr/PPresPtGas delivery systemQnPoint 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 61018-8 | HealthAssure