LOINCActiveBoth

LOINC Code 23047-4: EEEV Ag CF Ql (Brain)

23047-4 is a LOINC code used to identify EEEV Ag CF Ql (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 Eastern equine encephalitis virus Ag. It is commonly used with the system or sample type Brain.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 Eastern equine encephalitis virus Ag. It is commonly used with the system or sample type 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: Comp fix

What it does not mean

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

Key facts

  • Eastern equine encephalitis virus Ag [Presence] in Brain by Complement fixation
  • Eastern equine encephalitis virus Ag
  • Antigen; Antigens; Cerebral; Cerebrum; CF; Comp fixation; Compfix; Complement fixation; EEE virus; EEEV; Enc; Enceph; Encephalomyelitis; Equin; Head; ID; Infectious Disease; InfectiousDisease; Intracranial; Microbiology; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Togavirus

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

EEEV Ag CF Ql (Brain)Eastern equine encephalitis virus Ag [Presence] in Brain by Complement fixationEEEV Ag Brain Ql CFEastern equine encephalitis virus AgMICROEastern equine encephalitis virus antigen, BrainPrThr

Frequently asked questions

Code details

Code23047-4
SystemLOINC
Display nameEEEV Ag CF Ql (Brain)
DescriptionEastern equine encephalitis virus Ag
Short nameEEEV Ag Brain Ql CF
ComponentEastern equine encephalitis virus Ag
PropertyPrThr
TimingPt
System (specimen)Brain
ScaleOrd
MethodComp fix
ClassMICRO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0n
Last changed2.56

Consumer names

Eastern equine encephalitis virus antigen, Brain

Part names

Eastern equine encephalitis virus AgPrThrPtBrainOrdComp fixPresence or ThresholdPoint in time (spot)Complement fixation

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 23047-4 | HealthAssure