MCMedicalCodingSoftware
4A12XM4

4A12XM4Monitoring of Cardiac Stress, External Approach

Billable / specific codeICD-10-PCS

CMS abbreviated title: Monitoring of Cardiac Stress, External Approach

How 4A12XM4 is built

Every ICD-10-PCS code is seven independent character positions. Each one is a separate decision, and the meaning of a character depends on the positions before it.

  1. 4SectionMeasurement and Monitoring — What family of procedure this is
  2. ABody systemWhich system it acts on
  3. 1Root operationThe objective — the verb of the procedure
  4. 2Body partThe specific site
  5. XApproachHow the site was reached
  6. MDeviceWhat was left in place, if anything
  7. 4QualifierA further distinction where one applies

Codes near 4A12XM4

In CMS’s own ordering, which groups codes that differ by only the last character or two — usually the approach, device or qualifier.

  • 4A128FZMonitoring of Cardiac Rhythm, Via Natural or Artificial Opening Endoscopic
  • 4A128HZMonitoring of Cardiac Sound, Via Natural or Artificial Opening Endoscopic
  • 4A12X45Monitoring of Cardiac Electrical Activity, Ambulatory, External Approach
  • 4A12X4ZMonitoring of Cardiac Electrical Activity, External Approach
  • 4A12X9ZMonitoring of Cardiac Output, External Approach
  • 4A12XCZMonitoring of Cardiac Rate, External Approach
  • 4A12XFZMonitoring of Cardiac Rhythm, External Approach
  • 4A12XHZMonitoring of Cardiac Sound, External Approach
  • 4A12XM4Monitoring of Cardiac Stress, External Approach
  • 4A12XSHMonitoring of Cardiac Vascular Perfusion using Indocyanine Green Dye, External Approach
  • 4A13051Monitoring of Arterial Flow, Peripheral, Open Approach
  • 4A13053Monitoring of Arterial Flow, Pulmonary, Open Approach
  • 4A1305CMonitoring of Arterial Flow, Coronary, Open Approach
  • 4A130B1Monitoring of Arterial Pressure, Peripheral, Open Approach
  • 4A130B3Monitoring of Arterial Pressure, Pulmonary, Open Approach
  • 4A130BCMonitoring of Arterial Pressure, Coronary, Open Approach
  • 4A130H1Monitoring of Arterial Sound, Peripheral, Open Approach
ICD-10-PCSFY2026