LOINCActiveObservation

LOINC Code 97504-5: Percent sensor usage

97504-5 is a LOINC code used to identify Percent sensor usage 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 Percent sensor usage. 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 Percent sensor usage. 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: ACTIVE
  • Order vs observation: Observation
  • Method: Calculated

What it does not mean

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

Key facts

  • Percent sensor usage
  • The percent of time in the reporting period that the sensor was worn.
  • Calc; Calculation; H+P; H+P.HX; P prime; QNT; Quan; Quant; Quantitative; Report period; Sensor usage %

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

Percent sensor usageSensor usage %H&P.HXTimeFrRptPeriod^PatientQn

Frequently asked questions

Code details

Code97504-5
SystemLOINC
Display namePercent sensor usage
Short nameSensor usage %
ComponentPercent sensor usage
PropertyTimeFr
TimingRptPeriod
System (specimen)^Patient
ScaleQn
MethodCalculated
ClassH&P.HX
Example units%
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

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

Part names

Percent sensor usageTimeFrRptPeriod^PatientQnCalculatedTime FractionReporting Period

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 97504-5 | HealthAssure