LOINCActiveBoth

LOINC Code 11523-8: EEG study

11523-8 is a LOINC code used to identify EEG study 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 Electroencephalography study. It is commonly used with the system or sample type ^Patient.

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 Electroencephalography study. It is commonly used with the system or sample type ^Patient.

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

What it does not mean

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

Key facts

  • EEG study
  • Electroencephalography study
  • Document; EEG study; Finding; Findings; Neuro; Neurology; Point in time; Random; Study report

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

EEG studyElectroencephalography studyNEUROFindPt^PatientDoc

Frequently asked questions

Code details

Code11523-8
SystemLOINC
Display nameEEG study
DescriptionElectroencephalography study
Short nameEEG study
ComponentElectroencephalography study
PropertyFind
TimingPt
System (specimen)^Patient
ScaleDoc
ClassNEURO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0j-a
Last changed2.72

Part names

Electroencephalography studyFindPt^PatientDocEEG studyFindingPoint in time (spot)

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 11523-8 | HealthAssure