Tiro.health Implementation Guide
0.1.0 - ci-build

Tiro.health Implementation Guide - Local Development build (v0.1.0) built by the FHIR (HL7® FHIR® Standard) Build Tools. See the Directory of published versions

CodeSystem: Tiro Cardiac Metric Codes

Official URL: http://fhir.tiro.health/CodeSystem/tiro-cardiac-metric Version: 0.1.0
Draft as of 2026-06-09 Computable Name: TiroCardiacMetric

Local codes for cardiac monitoring metrics that have no equivalent in LOINC or SNOMED CT. The set is deliberately small: each Tiro code documents a genuine terminology gap (AFib burden / episode statistics, sinus pause counts and longest pause, ventricular- and supraventricular-tachycardia run counts and longest runs, and per-panel Holter grouper codes that LOINC does not currently provide).

Codes covered by LOINC or SNOMED CT are NOT duplicated here — see the example instances for the chosen LOINC/SCT codes (PVC count LOINC#76126-2, premature atrial contractions LOINC#8615-7, atrial fibrillation SCT#49436004, …).

These codes are a stopgap. Each entry should be replaced with a LOINC or SNOMED CT code as soon as a suitable concept becomes available.

This Code system is referenced in the content logical definition of the following value sets:

  • This CodeSystem is not used here; it may be used elsewhere (e.g. specifications and/or implementations that use this content)

This case-sensitive code system http://fhir.tiro.health/CodeSystem/tiro-cardiac-metric defines the following codes:

CodeDisplay
afib-burden Atrial fibrillation burden (% of recording in AF)
afib-episode-count Atrial fibrillation episode count
afib-longest-episode Atrial fibrillation longest episode duration
pause-count Sinus pause count
longest-pause Longest sinus pause duration
vt-longest-run Ventricular tachycardia longest run length
svt-run-count Supraventricular tachycardia run count