LOINC

LOINC Code 64592-9: FVC quality attribute Respiratory system [PhenX]

64592-9 is a LOINC code used to identify FVC quality attribute Respiratory system [PhenX] 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 FVC quality attribute. 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 FVC quality attribute. 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: TRIAL
  • Method: PhenX

What it does not mean

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

Key facts

  • FVC quality attribute Respiratory system [PhenX]
  • FVC quality attribute
  • Breathing; Finding; Findings; FVCQA; Lungs; Nominal; Point in time; Random; RS

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

FVC quality attribute Respiratory system [PhenX]FVCQA Respiratory PhenXFVC quality attributePHENXFindPtRespiratory system

Frequently asked questions

Code details

Code64592-9
SystemLOINC
Display nameFVC quality attribute Respiratory system [PhenX]
DescriptionFVC quality attribute
Short nameFVCQA Respiratory PhenX
ComponentFVC quality attribute
PropertyFind
TimingPt
System (specimen)Respiratory system
ScaleNom
MethodPhenX
ClassPHENX
StatusTRIAL

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.36
Last changed2.65

Part names

FVC quality attributeFindPtRespiratory systemNomPhenXFindingPoint 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 64592-9 | HealthAssure