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 52740-8: Altered level of consciousness/alertness during 2 day assessment period

Name: LOINC Code 52740-8: Altered level of consciousness/alertness during 2 day assessment period
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:36.028Z

52740-8 is a LOINC code used to identify Altered level of consciousness/alertness during 2 day assessment period 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 Altered level of consciousness &or alertness during 2D assessment period. 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 Altered level of consciousness &or alertness during 2D assessment period. 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: Observed.CAM.CARE

What it does not mean

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

Key facts

Altered level of consciousness/alertness during 2 day assessment period

Altered level of consciousness &or alertness during 2D assessment period

The patient has an altered level of consciousnessvigilant (e.g., startles easily to any sound or touch), lethargic (e.g., repeatedly dozes off when asked questions, but responds to voice or touch), stuporous (e.g., very difficult to arouse and keep arou

2 days; 48 hours; CARE Survey; Continuity assessment record and evaluation; Finding; Findings; Levels; Levl; LV; LVL; Ordinal; Ql; Qual; Qualitative; Screen; Survey

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

Altered level of consciousness/alertness during 2 day assessment periodAltered level of consciousness &or alertness during 2D assessment periodSURVEY.CAREFind2D^PatientOrd

Frequently asked questions

Code details

Code52740-8

SystemLOINC

Display nameAltered level of consciousness/alertness during 2 day assessment period

DescriptionAltered level of consciousness &or alertness during 2D assessment period

ComponentAltered level of consciousness &or alertness during 2D assessment period

PropertyFind

Timing2D

System (specimen)^Patient

ScaleOrd

MethodObserved.CAM.CARE

ClassSURVEY.CARE

StatusTRIAL

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.29

Last changed2.54

Part names

Altered level of consciousness &or alertness during 2D assessment periodFind2D^PatientOrdObserved.CAM.CAREAltered level of consciousness/alertness during 2 day assessment periodFinding2 days

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.