LOINCActive

LOINC Code 61006-3: Perfusion index Tissue by Pulse oximetry

61006-3 is a LOINC code used to identify Perfusion index Tissue by Pulse oximetry 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 Perfusion index. It is commonly used with the system or sample type Tiss.

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 Perfusion index. It is commonly used with the system or sample type Tiss.

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
  • Method: Pulse oximetry

What it does not mean

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

Key facts

  • Perfusion index Tissue by Pulse oximetry
  • Perfusion index
  • Lung; PF; Point in time; PULMONARY; Pulmonology; PulseOx; QNT; Quan; Quant; Quantitative; Random; Respiratory; SpO2; Tissue; Tissue, unspecified; Velocity ratio

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

Perfusion index Tissue by Pulse oximetryPerfusion index Tiss PulseOxPerfusion indexPULMVelRtoPtTiss

Frequently asked questions

Code details

Code61006-3
SystemLOINC
Display namePerfusion index Tissue by Pulse oximetry
DescriptionPerfusion index
Short namePerfusion index Tiss PulseOx
ComponentPerfusion index
PropertyVelRto
TimingPt
System (specimen)Tiss
ScaleQn
MethodPulse oximetry
ClassPULM
Example units%
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.42
Last changed2.70

Part names

Perfusion indexVelRtoPtTissQnPulse oximetryVelocity RatioPoint in time (spot)Tissue and Smears

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 61006-3 | HealthAssure