LOINCActiveBoth

LOINC Code 81579-5: PT perfusion Brain

81579-5 is a LOINC code used to identify PT perfusion Brain 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 Multisection^W radionuclide IV. It is commonly used with the system or sample type Head>Brain.

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 Multisection^W radionuclide IV. It is commonly used with the system or sample type Head>Brain.

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
  • Order vs observation: Both
  • Method: PT.perfusion

What it does not mean

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

Key facts

  • PT perfusion Brain
  • Multisection^W radionuclide IV
  • Brain; Cerebral; Cerebrum; CorePlaybook; Cranial; Cranium; Document; Finding; Findings; Head; Imaging; Intracranial; PET Scan; PF; Playbook; Point in time; Position Emmision Tomography; Positron Emission Tomography; Rad; RADIOLOGY; Radnuc.PET; Random; RN; RNC; Scan; Skull; W RNC IV

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

PT perfusion BrainPT.perfusion Brain W RNC IVMultisection^W radionuclide IVRADFindPtHead>Brain

Frequently asked questions

Code details

Code81579-5
SystemLOINC
Display namePT perfusion Brain
DescriptionMultisection^W radionuclide IV
Short namePT.perfusion Brain W RNC IV
ComponentMultisection^W radionuclide IV
PropertyFind
TimingPt
System (specimen)Head>Brain
ScaleDoc
MethodPT.perfusion
ClassRAD
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.56
Last changed2.61

Part names

Multisection^W radionuclide IVFindPtHead>BrainDocPT.perfusionHeadPerfusionIVWBrainRadionuclideFindingPoint in time (spot)PT perfusionIntravenous

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 81579-5 | HealthAssure