Endocrine System (0G) ICD-10-PCS
The 0G body system covers Medical and Surgical procedures on endocrine system, with 1,764 ICD-10-PCS codes across 15 root operations, 1,734 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 15 operations · 1,764 codes
| Chars 1–3 | Root Operation | Codes | Billable |
|---|---|---|---|
| 0G2 | ChangeTaking out or off a device from a body part and putting back an identical or similar device in or on the same body part without cutting or puncturing the skin or a mucous membrane | 26 | 24 |
| 0G5 | DestructionPhysical eradication of all or a portion of a body part by the direct use of energy, force or a destructive agent | 266 | 264 |
| 0G8 | DivisionCutting into a body part without draining fluids and/or gases from the body part in order to separate or transect a body part | 14 | 12 |
| 0G9 | DrainageTaking or letting out fluids and/or gases from a body part | 398 | 396 |
| 0GB | ExcisionCutting out or off, without replacement, a portion of a body part | 266 | 264 |
| 0GC | ExtirpationTaking or cutting out solid matter from a body part | 134 | 132 |
| 0GH | InsertionPutting in a non-biological appliance that monitors, assists, performs or prevents a physiological function but does not physically take the place of a body part | 26 | 24 |
| 0GJ | InspectionVisually and/or manually exploring a body part | 38 | 36 |
| 0GM | ReattachmentPutting back in or on all or a portion of a separated body part to its normal location or other suitable location | 42 | 40 |
| 0GN | ReleaseFreeing a body part from an abnormal physical constraint by cutting or by use of force | 134 | 132 |
| 0GP | RemovalTaking out or off a device from a body part | 72 | 70 |
| 0GQ | RepairRestoring, to the extent possible, a body part to its normal anatomic structure and function | 140 | 138 |
| 0GS | RepositionMoving to its normal location or other suitable location all or a portion of a body part | 42 | 40 |
| 0GT | ResectionCutting out or off, without replacement, all of a body part | 94 | 92 |
| 0GW | RevisionCorrecting, to the extent possible, a portion of a malfunctioning device or the position of a displaced device | 72 | 70 |
The info icon shows the official root operation definition and previews the codes in that range.
About the 0G Body System
The ICD-10-PCS root operations in the Medical and Surgical section for the Endocrine System categorize various procedures related to treatment and management of endocrine organs. These root operations involve actions ranging from removing devices to cutting, destroying, or repairing body parts within this system.
For example, the root operation Change (0G2) refers to taking out and then replacing a device on the same body part without puncturing the skin. Destruction (0G5) involves the eradication of all or part of an endocrine body part using energy or force. Procedures like Division (0G8) cut into an endocrine organ to separate it, while Drainage (0G9) removes fluids or gases. Insertion (0GH) adds a non-biological device that assists or monitors endocrine function. Additionally, Inspection (0GJ) allows visually or manually exploring an endocrine body part, crucial for diagnosis. These codes provide precise descriptors for documenting procedures such as removing solid matter (Extirpation), restoring structure (Repair), or resecting an entire body part (Resection), enhancing clarity in endocrine system coding.
Questions About This Page
How many codes are in the 0G body system?
The 0G body system contains 1,764 ICD-10-PCS codes in FY 2026, organized into 15 root operations. 1,734 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.
