What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINC

LOINC Code 65394-9: If diagnosed with migraines, at what age were you first diagnosed with migraines [PhenX]

Name: LOINC Code 65394-9: If diagnosed with migraines, at what age were you first diagnosed with migraines [PhenX]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:44.551Z

65394-9 is a LOINC code used to identify If diagnosed with migraines, at what age were you first diagnosed with migraines [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 If diagnosed with migraines, at what age were you first diagnosed with migraines. 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 If diagnosed with migraines, at what age were you first diagnosed with migraines. 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

If diagnosed with migraines, at what age were you first diagnosed with migraines [PhenX]
If diagnosed with migraines, at what age were you first diagnosed with migraines
Age diagnosed migraines; Point in time; QNT; Quan; Quant; Quantitative; Random

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

If diagnosed with migraines, at what age were you first diagnosed with migraines [PhenX]Age diagnosed migraines PhenXIf diagnosed with migraines, at what age were you first diagnosed with migrainesPHENXTimePt^Patient

Frequently asked questions

Code details

Code65394-9

SystemLOINC

Display nameIf diagnosed with migraines, at what age were you first diagnosed with migraines [PhenX]

DescriptionIf diagnosed with migraines, at what age were you first diagnosed with migraines

Short nameAge diagnosed migraines PhenX

ComponentIf diagnosed with migraines, at what age were you first diagnosed with migraines

PropertyTime

TimingPt

System (specimen)^Patient

ScaleQn

MethodPhenX

ClassPHENX

Example unitsyears

StatusTRIAL

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.36

Last changed2.65

Part names

If diagnosed with migraines, at what age were you first diagnosed with migrainesTimePt^PatientQnPhenXTime (e.g. seconds)Point 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.