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 65599-3: In the past year, have you awakened during the night and had a hard time getting back to sleep [PhenX]

Name: LOINC Code 65599-3: In the past year, have you awakened during the night and had a hard time getting back to sleep [PhenX]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:45.456Z

65599-3 is a LOINC code used to identify In the past year, have you awakened during the night and had a hard time getting back to sleep [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 In the past Y, have you awakened during the night and had a hard time getting back to sleep. 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 In the past Y, have you awakened during the night and had a hard time getting back to sleep. 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

In the past year, have you awakened during the night and had a hard time getting back to sleep [PhenX]
In the past Y, have you awakened during the night and had a hard time getting back to sleep
Finding; Findings; Last; Ordinal; Past Y awake night; 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

In the past year, have you awakened during the night and had a hard time getting back to sleep [PhenX]Past Y awake night PhenXIn the past Y, have you awakened during the night and had a hard time getting back to sleepPHENXFind1Y^Patient

Frequently asked questions

Code details

Code65599-3

SystemLOINC

Display nameIn the past year, have you awakened during the night and had a hard time getting back to sleep [PhenX]

DescriptionIn the past Y, have you awakened during the night and had a hard time getting back to sleep

Short namePast Y awake night PhenX

ComponentIn the past Y, have you awakened during the night and had a hard time getting back to sleep

PropertyFind

Timing1Y

System (specimen)^Patient

ScaleOrd

MethodPhenX

ClassPHENX

StatusTRIAL

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.36

Last changed2.65

Part names

In the past Y, have you awakened during the night and had a hard time getting back to sleepFind1Y^PatientOrdPhenXIn the past year, have you awakened during the night and had a hard time getting back to sleepFinding1 year

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.