LOINC

LOINC Code 66386-4: Has the child had a seizure or a brain problem [PhenX]

66386-4 is a LOINC code used to identify Has the child had a seizure or a brain problem [PhenX] 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 Has the child had a seizure or a brain problem. 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 Has the child had a seizure or a brain problem. 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: TRIAL
  • Method: PhenX

What it does not mean

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

Key facts

  • Has the child had a seizure or a brain problem [PhenX]
  • Has the child had a seizure or a brain problem
  • Child seizure brain problem; Finding; Findings; Ordinal; Point in time; QL; Qual; Qualitative; Random; Screen

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

Has the child had a seizure or a brain problem [PhenX]Child seizure brain problem PhenXHas the child had a seizure or a brain problemPHENXFindPt^Patient

Frequently asked questions

Code details

Code66386-4
SystemLOINC
Display nameHas the child had a seizure or a brain problem [PhenX]
DescriptionHas the child had a seizure or a brain problem
Short nameChild seizure brain problem PhenX
ComponentHas the child had a seizure or a brain problem
PropertyFind
TimingPt
System (specimen)^Patient
ScaleOrd
MethodPhenX
ClassPHENX
StatusTRIAL

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.38
Last changed2.65

Part names

Has the child had a seizure or a brain problemFindPt^PatientOrdPhenXFindingPoint 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 66386-4 | HealthAssure