LOINCActive

LOINC Code 8841-9: Right atrium Oxygen saturation

8841-9 is a LOINC code used to identify Right atrium Oxygen saturation 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 saturation. It is commonly used with the system or sample type Heart.atrium.right.

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 saturation. It is commonly used with the system or sample type Heart.atrium.right.

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

  • Right atrium Oxygen saturation
  • Oxygen saturation
  • Atrial; Cardiac; Cardio; Cardiology; Heart Disease; Hemodynamics; HEMODYNAMICS.MOLEC; Hrt; Lung; Mass Fraction; O2; Percent; Point in time; Pulmonary; Pulmonology; QNT; Quan; Quant; Quantitative; R; RA; Random; Respiratory; RT; SaO2; SAT; Satn; SO2; tO2

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

Right atrium Oxygen saturationSaO2 % RAOxygen saturationHEMODYN.MOLECMFrPtHeart.atrium.right

Frequently asked questions

Code details

Code8841-9
SystemLOINC
Display nameRight atrium Oxygen saturation
DescriptionOxygen saturation
Short nameSaO2 % RA
ComponentOxygen saturation
PropertyMFr
TimingPt
System (specimen)Heart.atrium.right
ScaleQn
ClassHEMODYN.MOLEC
Example units%
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0h(3)
Last changed2.40

Part names

Oxygen saturationMFrPtHeart.atrium.rightQnMass fractionPoint in time (spot)Heart.atrium Right

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 8841-9 | HealthAssure