<status value="active"/> <date value="2026-03-25T00:24:16-05:00"/> <publisher value="MITRE"/> <contact> <name value="MITRE"/> <telecom> <system value="url"/> <value value="https://www.mitre.org/"/> </telecom> </contact> <description value="Codes for physiologic and digital biomarkers related to behavioral health and stress."/> <caseSensitive value="true"/> <content value="complete"/> <count value="8"/> <concept> <code value="cortisol-ugdl"/> <display value="Cortisol (µg/dL)"/> <definition value="Cortisol concentration used as a stress biomarker."/> </concept> <concept> <code value="hrv-ms"/> <display value="Heart rate variability (ms)"/> <definition value="Root-mean-square or similar measure of HRV in milliseconds."/> </concept> <concept> <code value="sleep-duration-h"/> <display value="Sleep duration (hours)"/> <definition value="Total nightly sleep duration in hours."/> </concept> <concept> <code value="sleep-efficiency-pct"/> <display value="Sleep efficiency (%)"/> <definition value="Percentage of time in bed spent asleep."/> </concept> <concept> <code value="awakenings-count"/> <display value="Nocturnal awakenings (count)"/> <definition value="Number of awakenings during sleep period."/> </concept> <concept> <code value="speech-stress-index"/> <display value="Speech stress index"/> <definition value="Derived metric from speech prosody indicating stress level."/> </concept> <concept> <code value="activity-level"/> <display value="Activity level"/> <definition value="Gross motor activity level from accelerometry."/> </concept> <concept> <code value="reaction-time-ms"/> <display value="Reaction time (ms)"/> <definition value="Reaction time in milliseconds from vigilance or cognitive tests."/> </concept> </CodeSystem>

Generated Narrative: CodeSystem behavioral-biomarker-cs

This case-sensitive code system http://hl7.org/fhir/uv/aerospace/CodeSystem/behavioral-biomarker-cs defines the following codes:

Code	Display	Definition
cortisol-ugdl	Cortisol (µg/dL)	Cortisol concentration used as a stress biomarker.
hrv-ms	Heart rate variability (ms)	Root-mean-square or similar measure of HRV in milliseconds.
sleep-duration-h	Sleep duration (hours)	Total nightly sleep duration in hours.
sleep-efficiency-pct	Sleep efficiency (%)	Percentage of time in bed spent asleep.
awakenings-count	Nocturnal awakenings (count)	Number of awakenings during sleep period.
speech-stress-index	Speech stress index	Derived metric from speech prosody indicating stress level.
activity-level	Activity level	Gross motor activity level from accelerometry.
reaction-time-ms	Reaction time (ms)	Reaction time in milliseconds from vigilance or cognitive tests.