LOINCActiveBoth

LOINC Code 76269-0: Respiratory quotient Respiratory system

76269-0 is a LOINC code used to identify Respiratory quotient Respiratory 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 Respiratory quotient. It is commonly used with the system or sample type Respiratory 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 Respiratory quotient. It is commonly used with the system or sample type Respiratory 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

  • Respiratory quotient Respiratory system
  • Respiratory quotient
  • Breathing; Lung; Lungs; Point in time; PULMONARY; Pulmonology; QNT; Quan; Quant; Quantitative; Random; Resp quot; Respiratory; RS; Volume ratio

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

Respiratory quotient Respiratory systemResp quot RespiratoryRespiratory quotientPULMVRtoPtRespiratory system

Frequently asked questions

Code details

Code76269-0
SystemLOINC
Display nameRespiratory quotient Respiratory system
DescriptionRespiratory quotient
Short nameResp quot Respiratory
ComponentRespiratory quotient
PropertyVRto
TimingPt
System (specimen)Respiratory system
ScaleQn
ClassPULM
Example unitsratio
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.54
Last changed2.54

Part names

Respiratory quotientVRtoPtRespiratory systemQnVolume RatioPoint 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 76269-0 | HealthAssure