4B0 Measurement - Physiological Devices ICD-10-PCS
The 4B0 code range contains 8 ICD-10-PCS codes for Measurement procedures on the physiological devices. 7 of the codes are billable and valid for inpatient claim submission in fiscal year 2026.
Root Operation Definition
Measurement: Determining the level of a physiological or physical function at a point in time.
Codes in the 4B0 Range 8 codes · 7 billable
- 4B0 Measurement and Monitoring, Physiological Devices, MeasurementNon-billable header
- 4B00XVZ Measurement of Central Nervous Stimulator, External Approach
- 4B00XW0 Measurement of Central Nervous Cerebrospinal Fluid Shunt using Wireless Sensor, External Approach
- 4B01XVZ Measurement of Peripheral Nervous Stimulator, External Approach
- 4B02XSZ Measurement of Cardiac Pacemaker, External Approach
- 4B02XTZ Measurement of Cardiac Defibrillator, External Approach
- 4B09XSZ Measurement of Respiratory Pacemaker, External Approach
- 4B0FXVZ Measurement of Musculoskeletal Stimulator, External Approach
About the 4B0 Code Range
The ICD-10-PCS root operation Measurement (code 4B0) involves quantifying physiological parameters using devices, typically to assess the function or status of implanted or external medical equipment. This operation belongs to the Measurement and Monitoring section.
The Measurement root operation applies specifically to physiological devices and includes various body systems such as the nervous, cardiac, respiratory, and musculoskeletal systems. Codes like 4B00XVZ and 4B01XVZ illustrate measurement of stimulators for the Central Nervous System and Peripheral Nervous System using an External Approach. Similarly, cardiac devices such as pacemakers (4B02XSZ) and defibrillators (4B02XTZ) can be measured externally. The list also includes the measurement of respiratory pacemakers (4B09XSZ) and musculoskeletal stimulators (4B0FXVZ). These codes are essential for documenting the accurate monitoring and functional status checks of implanted or external physiological devices in clinical practice.
Questions About This Page
How many billable codes are in the 4B0 range?
Of the 8 codes in this range, 7 are billable and valid for inpatient claim submission from October 1, 2025 through September 30, 2026. Table header codes group them but cannot be reported on claims.
What does the 4B0 range classify?
The range classifies Measurement procedures, determining the level of a physiological or physical function at a point in time, performed on the physiological devices. Each code adds the body part, approach, device, and qualifier in characters four through seven, and links to its own reference page.
Related References
Source: CMS FY 2026 ICD-10-PCS order file and code tables, effective October 1, 2025 through September 30, 2026.
