LOINCActive

LOINC Code 9129-8: Fluid output chest tube

9129-8 is a LOINC code used to identify Fluid output chest tube 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 Fluid output.chest tube. It is commonly used with the system or sample type Pleural space.

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 Fluid output.chest tube. It is commonly used with the system or sample type Pleural space.

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

What it does not mean

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

Key facts

  • Fluid output chest tube
  • Fluid output.chest tube
  • Fld; Fluid output chest tube; IO_OUTPUT; IO_OUTPUT.MOLEC; Lung; Pl space; Point in time; Pulmonary; Pulmonology; QNT; Quan; Quant; Quantitative; Random; Respiratory; 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

Fluid output chest tubeFluid output.chest tubeIO_OUT.MOLECVolPtPleural spaceQn

Frequently asked questions

Code details

Code9129-8
SystemLOINC
Display nameFluid output chest tube
DescriptionFluid output.chest tube
Short nameFluid output chest tube
ComponentFluid output.chest tube
PropertyVol
TimingPt
System (specimen)Pleural space
ScaleQn
ClassIO_OUT.MOLEC
Example unitscm3
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0i
Last changed2.54

Part names

Fluid output.chest tubeVolPtPleural spaceQnFluid output chest tubeVolumePoint 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 9129-8 | HealthAssure