ICD-10-PCS › 4 Measurement and Monitoring › 4A Physiological Systems
4A - Physiological Systems
418 ICD-10-PCS codes sit in this body system, of which 416 are billable in FY2027. Every one has a page giving the years it was valid and what to use instead when it is not.
- 418 codes
- 416 billable FY2027
- 2 not billable, retired or subdivided
- 2 tables
Tables
Each of these is a published PCS table. Its page lists the valid values for characters 4 to 7, and the codes they build.
| Code | Description | Status |
|---|---|---|
| 4A0 | Measurement and Monitoring, Physiological Systems, Measurement | Not billable |
| 4A1 | Measurement and Monitoring, Physiological Systems, Monitoring | Not billable |
Or browse all ICD-10-PCS codes by section character, check a list of codes with the batch validity checker, or see what changed in each release.