MCMedicalCodingSoftware
4A100BZ

4A100BZMonitoring of Central Nervous Pressure, Open Approach

Billable / specific codeICD-10-PCS

CMS abbreviated title: Monitoring of Central Nervous Pressure, Open Approach

How 4A100BZ 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. 0Body partThe specific site
  5. 0ApproachHow the site was reached
  6. BDeviceWhat was left in place, if anything
  7. ZQualifierA further distinction where one applies

Codes near 4A100BZ

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

  • 4A0Z7KZMeasurement of Temperature, Via Natural or Artificial Opening
  • 4A0ZX6ZMeasurement of Metabolism, External Approach
  • 4A0ZXKZMeasurement of Temperature, External Approach
  • 4A0ZXQZMeasurement of Sleep, External Approach
  • 4A1002ZMonitoring of Central Nervous Conductivity, Open Approach
  • 4A1004GMonitoring of Central Nervous Electrical Activity, Intraoperative, Open Approach
  • 4A1004ZMonitoring of Central Nervous Electrical Activity, Open Approach
  • 4A100BZMonitoring of Central Nervous Pressure, Open Approach
  • 4A1034GMonitoring of Central Nervous Electrical Activity, Intraoperative, Percutaneous Approach
  • 4A1034ZMonitoring of Central Nervous Electrical Activity, Percutaneous Approach
  • 4A103BDMonitoring of Intracranial Pressure, Percutaneous Approach
  • 4A103KDMonitoring of Intracranial Temperature, Percutaneous Approach
  • 4A103RDMonitoring of Intracranial Saturation, Percutaneous Approach
  • 4A1074GMonitoring of Central Nervous Electrical Activity, Intraoperative, Via Natural or Artificial Opening
  • 4A1074ZMonitoring of Central Nervous Electrical Activity, Via Natural or Artificial Opening
  • 4A107BDMonitoring of Intracranial Pressure, Via Natural or Artificial Opening
ICD-10-PCSFY2026