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 66382-3: Have you received any vaccinations in the past 4 weeks [PhenX]

Name: LOINC Code 66382-3: Have you received any vaccinations in the past 4 weeks [PhenX]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:45.460Z

66382-3 is a LOINC code used to identify Have you received any vaccinations in the past 4 weeks [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 Have you received any vaccinations in the past 4W. 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 Have you received any vaccinations in the past 4W. 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

Have you received any vaccinations in the past 4 weeks [PhenX]
Have you received any vaccinations in the past 4W
4 weeks; Finding; Findings; Last; Ordinal; Ql; Qual; Qualitative; 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

Have you received any vaccinations in the past 4 weeks [PhenX]Vaccinations PhenXHave you received any vaccinations in the past 4WPHENXFind4W^Patient

Frequently asked questions

Code details

Code66382-3

SystemLOINC

Display nameHave you received any vaccinations in the past 4 weeks [PhenX]

DescriptionHave you received any vaccinations in the past 4W

Short nameVaccinations PhenX

ComponentHave you received any vaccinations in the past 4W

PropertyFind

Timing4W

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

Have you received any vaccinations in the past 4WFind4W^PatientOrdPhenXHave you received any vaccinations in the past 4 weeksFinding4 weeks

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.