LOINCActiveBoth

LOINC Code 81456-6: Functional residual capacity --pre bronchodilation

81456-6 is a LOINC code used to identify Functional residual capacity --pre bronchodilation 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 Capacity.functional residual^pre bronchodilation. 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 Capacity.functional residual^pre bronchodilation. 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

  • Functional residual capacity --pre bronchodilation
  • Capacity.functional residual^pre bronchodilation
  • Before; Breathing; FRC; Lung; Lungs; Point in time; pre BD; Pulmonary; Pulmonology; QNT; Quan; Quant; Quantitative; Random; Respiratory; RS; 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

Functional residual capacity --pre bronchodilationFRC pre BDCapacity.functional residual^pre bronchodilationPULMVolPtRespiratory system

Frequently asked questions

Code details

Code81456-6
SystemLOINC
Display nameFunctional residual capacity --pre bronchodilation
DescriptionCapacity.functional residual^pre bronchodilation
Short nameFRC pre BD
ComponentCapacity.functional residual^pre bronchodilation
PropertyVol
TimingPt
System (specimen)Respiratory system
ScaleQn
ClassPULM
Example unitsL
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

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

Part names

Capacity.functional residual^pre bronchodilationVolPtRespiratory systemQnVolumePoint 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 81456-6 | HealthAssure