Physiological Systems and Anatomical Regions (8E) ICD-10-PCS
The 8E body system covers Other Procedures procedures on physiological systems and anatomical regions, with 173 ICD-10-PCS codes across 1 root operations, 171 of them billable in fiscal year 2026. Each root operation defines a distinct procedural objective, and the info icons show the official definition with a preview of the codes inside.
Root Operations in This Body System 1 operations · 173 codes
| Chars 1–3 | Root Operation | Codes | Billable |
|---|---|---|---|
| 8E0 | Other ProceduresMethodologies which attempt to remediate or cure a disorder or disease | 173 | 171 |
The info icon shows the official root operation definition and previews the codes in that range.
About the 8E Body System
The ICD-10-PCS root operation 8E - Physiological Systems and Anatomical Regions covers a category of procedures focused on addressing disorders or diseases within various body systems and regions. This classification falls under Other Procedures in the coding system.
Specifically, the code 8E0 represents procedures that use methodologies intended to remediate or cure a condition affecting physiological systems or anatomical areas. Unlike standard medical and surgical operations, these procedures are broad in scope and are aimed at restoring function or health to complex body systems. Accurate use of this root operation is essential for documenting interventions targeting systemic or regional disorders, distinguishing these actions from localized or traditional surgical treatments.
Questions About This Page
How many codes are in the 8E body system?
The 8E body system contains 173 ICD-10-PCS codes in FY 2026, organized into 1 root operations. 171 of them are billable on inpatient claims.
What is a root operation?
The root operation is the third character of every ICD-10-PCS code and names the objective of the procedure. Drainage takes fluid out, Excision cuts out a portion of a body part, and Resection removes all of one. Picking the right root operation is the central skill of PCS coding, so each one above carries its official CMS definition.
Related References
Source: CMS FY 2026 ICD-10-PCS order file and code tables, effective October 1, 2025 through September 30, 2026.
