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 66479-7: If you were not born in USA, indicate as closely as possible the date you first arrived here [PhenX]

Name: LOINC Code 66479-7: If you were not born in USA, indicate as closely as possible the date you first arrived here [PhenX]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:46.209Z

66479-7 is a LOINC code used to identify If you were not born in USA, indicate as closely as possible the date you first arrived here [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 you were not born in USA, indicate as closely as possible the date you first arrived here. 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 you were not born in USA, indicate as closely as possible the date you first arrived here. 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 you were not born in USA, indicate as closely as possible the date you first arrived here [PhenX]
If you were not born in USA, indicate as closely as possible the date you first arrived here
Arterial Stenosis; Date arrived USA; 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 you were not born in USA, indicate as closely as possible the date you first arrived here [PhenX]Date arrived USA PhenXIf you were not born in USA, indicate as closely as possible the date you first arrived herePHENXDatePt^Patient

Frequently asked questions

Code details

Code66479-7

SystemLOINC

Display nameIf you were not born in USA, indicate as closely as possible the date you first arrived here [PhenX]

DescriptionIf you were not born in USA, indicate as closely as possible the date you first arrived here

Short nameDate arrived USA PhenX

ComponentIf you were not born in USA, indicate as closely as possible the date you first arrived here

PropertyDate

TimingPt

System (specimen)^Patient

ScaleQn

MethodPhenX

ClassPHENX

Example unitsMMDDYY

StatusTRIAL

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.38

Last changed2.65

Part names

If you were not born in USA, indicate as closely as possible the date you first arrived hereDatePt^PatientQnPhenXPoint 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.