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.

LOINCActive

LOINC Code 65498-8: About how old were you the last time you had a period of 2 weeks like this [CIDI-SF]

Name: LOINC Code 65498-8: About how old were you the last time you had a period of 2 weeks like this [CIDI-SF]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:44.551Z

65498-8 is a LOINC code used to identify About how old were you the last time you had a period of 2 weeks like this [CIDI-SF] 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 old were you the last time you had a period of 2Ws like this. 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 old were you the last time you had a period of 2Ws like this. 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: ACTIVE
Method: CIDI-SF

What it does not mean

The code identifies the observation or test, not the actual result.

Key facts

About how old were you the last time you had a period of 2 weeks like this [CIDI-SF]
About how old were you the last time you had a period of 2Ws like this
Whether or not you received any help for it.
Depression age last occurrence; Past; PhenX; 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

About how old were you the last time you had a period of 2 weeks like this [CIDI-SF]Depression age last occurrence CIDI-SFAbout how old were you the last time you had a period of 2Ws like thisPHENXTimePt^Patient

Frequently asked questions

Code details

Code65498-8

SystemLOINC

Display nameAbout how old were you the last time you had a period of 2 weeks like this [CIDI-SF]

DescriptionAbout how old were you the last time you had a period of 2Ws like this

Short nameDepression age last occurrence CIDI-SF

ComponentAbout how old were you the last time you had a period of 2Ws like this

PropertyTime

TimingPt

System (specimen)^Patient

ScaleQn

MethodCIDI-SF

ClassPHENX

Example unitsyears

StatusACTIVE

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.36

Last changed2.65

Part names

About how old were you the last time you had a period of 2Ws like thisTimePt^PatientQnCIDI-SFAbout how old were you the last time you had a period of 2 weeks like thisTime (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.