Endocrine System (0G) ICD-10-PCS
The 0G body system covers Medical and Surgical procedures on endocrine system, with 882 ICD-10-PCS codes across 15 root operations, 867 of them billable in fiscal year 2027. 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 · 882 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 | 13 | 12 |
| 0G5 | DestructionPhysical eradication of all or a portion of a body part by the direct use of energy, force or a destructive agent | 133 | 132 |
| 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 | 7 | 6 |
| 0G9 | DrainageTaking or letting out fluids and/or gases from a body part | 199 | 198 |
| 0GB | ExcisionCutting out or off, without replacement, a portion of a body part | 133 | 132 |
| 0GC | ExtirpationTaking or cutting out solid matter from a body part | 67 | 66 |
| 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 | 13 | 12 |
| 0GJ | InspectionVisually and/or manually exploring a body part | 19 | 18 |
| 0GM | ReattachmentPutting back in or on all or a portion of a separated body part to its normal location or other suitable location | 21 | 20 |
| 0GN | ReleaseFreeing a body part from an abnormal physical constraint by cutting or by use of force | 67 | 66 |
| 0GP | RemovalTaking out or off a device from a body part | 36 | 35 |
| 0GQ | RepairRestoring, to the extent possible, a body part to its normal anatomic structure and function | 70 | 69 |
| 0GS | RepositionMoving to its normal location or other suitable location all or a portion of a body part | 21 | 20 |
| 0GT | ResectionCutting out or off, without replacement, all of a body part | 47 | 46 |
| 0GW | RevisionCorrecting, to the extent possible, a portion of a malfunctioning device or the position of a displaced device | 36 | 35 |
The info icon shows the official root operation definition and previews the codes in that range.
About the 0G Body System
These codes cover procedures on endocrine structures, including the pituitary, pineal, thyroid, parathyroid and adrenal glands. The body-part character distinguishes sites such as thyroid lobes, individual parathyroid glands, and left, right or both adrenal glands.
Some procedures take out part of a body part, as in Excision, or all of it, as in Resection. Others destroy part or all of a body part, remove solid matter, drain fluid or gas, or cut into a body part to separate it. The tables also cover inspecting, freeing, repairing, moving or reattaching a body part. Device procedures include inserting, changing, removing or correcting a device or its position.
Questions About This Page
How many codes are in the 0G body system?
The 0G body system contains 882 ICD-10-PCS codes in FY 2027, organized into 15 root operations. 867 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 2027 ICD-10-PCS order file and code tables, effective October 1, 2026 through September 30, 2027.
