LOINCActive

LOINC Code 57123-2: Hours designated [Estimate]

57123-2 is a LOINC code used to identify Hours designated [Estimate] 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 Hours designated. It is commonly used with the system or sample type {Nursing unit}.

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 Hours designated. It is commonly used with the system or sample type {Nursing unit}.

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: Estimate

What it does not mean

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

Key facts

  • Hours designated [Estimate]
  • Hours designated
  • Hours designated for care by nursing provider for a type for client and type of encounter
  • estimation; Nursing Management Minimum Data Set; Point in time; QNT; Quan; Quant; Quantitative; Random; Survey; SURVEY.NMMDS

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

Hours designated [Estimate]Hours designatedSURVEY.NMMDSTimePt{Nursing unit}Qn

Frequently asked questions

Code details

Code57123-2
SystemLOINC
Display nameHours designated [Estimate]
DescriptionHours designated
ComponentHours designated
PropertyTime
TimingPt
System (specimen){Nursing unit}
ScaleQn
MethodEstimate
ClassSURVEY.NMMDS
Example unitsH
StatusACTIVE

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.29
Last changed2.70

Part names

Hours designatedTimePt{Nursing unit}QnEstimateTime (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.

LOINC Code 57123-2 | HealthAssure