LOINCActive

LOINC Code 20147-5: FEV.5 Predicted

20147-5 is a LOINC code used to identify FEV.5 Predicted 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 Volume expired during 0.5 s of forced expiration. 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 Volume expired during 0.5 s of forced expiration. 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
  • Method: Predicted

What it does not mean

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

Key facts

  • FEV.5 Predicted
  • Volume expired during 0.5 s of forced expiration
  • Breathing; End tidal volume; Exp; FEV; FEV.5; Lung; Lungs; Point in time; PULMONARY; Pulmonology; QNT; Quan; Quant; Quantitative; Random; Respiratory; RS; S prime; Vet; Vol; Vol exp; Volume

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

FEV.5 PredictedVolume expired during 0.5 s of forced expirationPULMVolPtRespiratory systemQn

Frequently asked questions

Code details

Code20147-5
SystemLOINC
Display nameFEV.5 Predicted
DescriptionVolume expired during 0.5 s of forced expiration
Short nameFEV.5 Predicted
ComponentVolume expired during 0.5 s of forced expiration
PropertyVol
TimingPt
System (specimen)Respiratory system
ScaleQn
MethodPredicted
ClassPULM
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0m
Last changed2.40

Part names

Volume expired during 0.5 s of forced expirationVolPtRespiratory systemQnPredictedFEV.5VolumePoint 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 20147-5 | HealthAssure