LOINCActive

LOINC Code 8855-9: Superior vena cava Oxygen saturation

8855-9 is a LOINC code used to identify Superior vena cava 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 Vena cava.superior.

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 Vena cava.superior.

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

  • Superior vena cava Oxygen saturation
  • Oxygen saturation
  • Heart; Hemodynamics; HEMODYNAMICS.MOLEC; Lung; Mass fraction; O2; Percent; Point in time; Pulmonary; Pulmonology; QNT; Quan; Quant; Quantitative; Random; Respiratory; SaO2; SAT; Satn; SO2; SVC; tO2; VC

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

Superior vena cava Oxygen saturationSaO2 % SVCOxygen saturationHEMODYN.MOLECMFrPtVena cava.superior

Frequently asked questions

Code details

Code8855-9
SystemLOINC
Display nameSuperior vena cava Oxygen saturation
DescriptionOxygen saturation
Short nameSaO2 % SVC
ComponentOxygen saturation
PropertyMFr
TimingPt
System (specimen)Vena cava.superior
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 saturationMFrPtVena cava.superiorQnMass fractionPoint in time (spot)Superior vena cava

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 8855-9 | HealthAssure