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 65221-4: When did the traumatic event occur - if several, ask about the most closely associated with symptoms [Date and time] [PhenX]

Name: LOINC Code 65221-4: When did the traumatic event occur - if several, ask about the most closely associated with symptoms [Date and time] [PhenX]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:44.551Z

65221-4 is a LOINC code used to identify When did the traumatic event occur - if several, ask about the most closely associated with symptoms [Date and time] [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 When did the traumatic event occur - if several, ask about the most closely associated with symptoms. 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 When did the traumatic event occur - if several, ask about the most closely associated with symptoms. 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

When did the traumatic event occur - if several, ask about the most closely associated with symptoms [Date and time] [PhenX]
When did the traumatic event occur - if several, ask about the most closely associated with symptoms
Assoc; Date and time; Point in time; QNT; Quan; Quant; Quantitative; Random; Sx; Time stamp; Timestamp; When did event occur

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

When did the traumatic event occur - if several, ask about the most closely associated with symptoms [Date and time] [PhenX]When did event occur PhenXWhen did the traumatic event occur - if several, ask about the most closely associated with symptomsPHENXTmStpPt^Patient

Frequently asked questions

Code details

Code65221-4

SystemLOINC

Display nameWhen did the traumatic event occur - if several, ask about the most closely associated with symptoms [Date and time] [PhenX]

DescriptionWhen did the traumatic event occur - if several, ask about the most closely associated with symptoms

Short nameWhen did event occur PhenX

ComponentWhen did the traumatic event occur - if several, ask about the most closely associated with symptoms

PropertyTmStp

TimingPt

System (specimen)^Patient

ScaleQn

MethodPhenX

ClassPHENX

Example unitsMonth, Year

StatusTRIAL

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.36

Last changed2.65

Part names

When did the traumatic event occur - if several, ask about the most closely associated with symptomsTmStpPt^PatientQnPhenXTime Stamp (Date and Time)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.