LOINC

LOINC Code 64586-1: Date the sleep disorder started [PhenX]

64586-1 is a LOINC code used to identify Date the sleep disorder started [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 Date the sleep disorder started. 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 Date the sleep disorder started. 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

  • Date the sleep disorder started [PhenX]
  • Date the sleep disorder started
  • Child sleep disorder start date; 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

Date the sleep disorder started [PhenX]Child sleep disorder start date PhenXDate the sleep disorder startedPHENXDatePt^Patient

Frequently asked questions

Code details

Code64586-1
SystemLOINC
Display nameDate the sleep disorder started [PhenX]
DescriptionDate the sleep disorder started
Short nameChild sleep disorder start date PhenX
ComponentDate the sleep disorder started
PropertyDate
TimingPt
System (specimen)^Patient
ScaleQn
MethodPhenX
ClassPHENX
Example unitsMMDDYY
StatusTRIAL

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.36
Last changed2.65

Part names

Date the sleep disorder startedDatePt^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.

LOINC Code 64586-1 | HealthAssure