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.

LOINC

LOINC Code 76263-3: Deprecated Maximum expiratory gas flow Respiratory system airway

Name: LOINC Code 76263-3: Deprecated Maximum expiratory gas flow Respiratory system airway
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:56.388Z

76263-3 is a LOINC code used to identify Deprecated Maximum expiratory gas flow Respiratory system airway 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 Expiratory gas flow.max. It is commonly used with the system or sample type Respiratory system.airway.

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 Expiratory gas flow.max. It is commonly used with the system or sample type Respiratory system.airway.

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: DEPRECATED

What it does not mean

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

Key facts

Deprecated Maximum expiratory gas flow Respiratory system airway
Expiratory gas flow.max
Maximum expiratory gas flow during spontaneous respiration. [IEEE]
Breathing; Dynamic; Flow; Gases; Largest; Lung; Lungs; Maximal; Maximum; Peak; Peak expiratory flow; PEF; Point in time; Pulmonary; Pulmonology; QNT; Quan; Quant; Quantitative; Random; Respiratory; RS; 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

Deprecated Maximum expiratory gas flow Respiratory system airwayDeprecated PEF AirwayExpiratory gas flow.maxPULMVRatPtRespiratory system.airway

Frequently asked questions

Code details

Code76263-3

SystemLOINC

Display nameDeprecated Maximum expiratory gas flow Respiratory system airway

DescriptionExpiratory gas flow.max

Short nameDeprecated PEF Airway

ComponentExpiratory gas flow.max

PropertyVRat

TimingPt

System (specimen)Respiratory system.airway

ScaleQn

ClassPULM

Example unitsL/min

StatusDEPRECATED

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.54

Last changed2.56

Part names

Expiratory gas flow.maxVRatPtRespiratory system.airwayQnVolume RatePoint in time (spot)Respiratory system airway

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.