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 63585-4: About how long have you been in the United States [PhenX]

Name: LOINC Code 63585-4: About how long have you been in the United States [PhenX]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:42.802Z

63585-4 is a LOINC code used to identify About how long have you been in the United States [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 About how long have you been in the United States. 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 About how long have you been in the United States. 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

About how long have you been in the United States [PhenX]
About how long have you been in the United States
Point in time; QNT; Quan; Quant; Quantitative; Random; Years living in US

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

About how long have you been in the United States [PhenX]Years living in US PhenXAbout how long have you been in the United StatesPHENXTimePt^Patient

Frequently asked questions

Code details

Code63585-4

SystemLOINC

Display nameAbout how long have you been in the United States [PhenX]

DescriptionAbout how long have you been in the United States

Short nameYears living in US PhenX

ComponentAbout how long have you been in the United States

PropertyTime

TimingPt

System (specimen)^Patient

ScaleQn

MethodPhenX

ClassPHENX

Example unitsD, W, Mo, Y

StatusTRIAL

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.36

Last changed2.65

Part names

About how long have you been in the United StatesTimePt^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.