LOINCActiveObservation

LOINC Code 96269-6: Fractional concentration of exhaled nitric oxide

96269-6 is a LOINC code used to identify Fractional concentration of exhaled nitric oxide 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 Nitric oxide/Expired gas. It is commonly used with the system or sample type Exhl 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 Nitric oxide/Expired gas. It is commonly used with the system or sample type Exhl 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

Fractional concentration of exhaled nitric oxide
Nitric oxide/Expired gas
The fractional concentration of exhaled nitric oxide, or FeNO, is used to assess the amount of inflammation present in the lungs. Inflammatory cells produce NO, so higher levels of NO indicate the presence of inflammation. The FeNO test is used to help diagnose allergic or eosinophilic asthma as well as monitor treatment efficacy. [https//www.aaaai.org/conditions-and-treatments/library/asthma-library/feno-test]
Breath; ExG; Exhaled gas; Exhaled gas (=breath); Gases; Lung; NO; Percent; Point in time; PULMONARY; Pulmonology; QNT; Quan; Quant; Quantitative; Random; Respiratory; 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

Fractional concentration of exhaled nitric oxideFeNO VFrNitric oxide/Expired gasPULMVFrPtExhl gas

Frequently asked questions

Code details

Code96269-6
SystemLOINC
Display nameFractional concentration of exhaled nitric oxide
DescriptionNitric oxide/Expired gas
Short nameFeNO VFr
ComponentNitric oxide/Expired gas
PropertyVFr
TimingPt
System (specimen)Exhl gas
ScaleQn
ClassPULM
Example unitsppb
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.69
Last changed2.69

Part names

Nitric oxide/Expired gasVFrPtExhl gasQnVolume FractionPoint in time (spot)Exhaled 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.