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 65568-8: How many hours and minutes of sleep do you usually get when you take a nap [PhenX]

Name: LOINC Code 65568-8: How many hours and minutes of sleep do you usually get when you take a nap [PhenX]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:45.456Z

65568-8 is a LOINC code used to identify How many hours and minutes of sleep do you usually get when you take a nap [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 How many H and Ms of sleep do you usually get when you take a nap. 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 How many H and Ms of sleep do you usually get when you take a nap. 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

How many hours and minutes of sleep do you usually get when you take a nap [PhenX]
How many H and Ms of sleep do you usually get when you take a nap
Amount sleep naptime; 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

How many hours and minutes of sleep do you usually get when you take a nap [PhenX]Amount sleep naptime PhenXHow many H and Ms of sleep do you usually get when you take a napPHENXTimePt^Patient

Frequently asked questions

Code details

Code65568-8

SystemLOINC

Display nameHow many hours and minutes of sleep do you usually get when you take a nap [PhenX]

DescriptionHow many H and Ms of sleep do you usually get when you take a nap

Short nameAmount sleep naptime PhenX

ComponentHow many H and Ms of sleep do you usually get when you take a nap

PropertyTime

TimingPt

System (specimen)^Patient

ScaleQn

MethodPhenX

ClassPHENX

Example units'HHMM

StatusTRIAL

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.36

Last changed2.65

Part names

How many H and Ms of sleep do you usually get when you take a napTimePt^PatientQnPhenXHow many hours and minutes of sleep do you usually get when you take a napTime (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.