LOINCObservation

LOINC Code 40589-4: Deprecated Oxygen [Partial pressure] by Oximetry --post exercise

40589-4 is a LOINC code used to identify Deprecated Oxygen [Partial pressure] by Oximetry --post exercise 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 Oxygen^post exercise. It is commonly used with the system or sample type Bld.

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 Oxygen^post exercise. It is commonly used with the system or sample type Bld.

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: DEPRECATED
  • Order vs observation: Observation
  • Method: Oximetry

What it does not mean

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

Key facts

  • Deprecated Oxygen [Partial pressure] by Oximetry --post exercise
  • Oxygen^post exercise
  • After; Blood; EXCZ; Lung; O2; O2 partial pressure; p Exc; Partial pressure; PO2; Point in time; PST; Pulmonary; Pulmonology; QNT; Quan; Quant; Quantitative; Random; Respiratory; tO2; WB; Whole blood

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

Deprecated Oxygen [Partial pressure] by Oximetry --post exerciseDeprecated pO2 p Exc OximetryOxygen^post exercisePULMPPresPtBld

Frequently asked questions

Code details

Code40589-4
SystemLOINC
Display nameDeprecated Oxygen [Partial pressure] by Oximetry --post exercise
DescriptionOxygen^post exercise
Short nameDeprecated pO2 p Exc Oximetry
ComponentOxygen^post exercise
PropertyPPres
TimingPt
System (specimen)Bld
ScaleQn
MethodOximetry
ClassPULM
Example unitsmm Hg
StatusDEPRECATED
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.15
Last changed2.36

Part names

Oxygen^post exercisePPresPtBldQnOximetryPartial pressurePoint in time (spot)Blood

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 40589-4 | HealthAssure