Endocrine System (DG) ICD-10-PCS
The DG body system covers Radiation Therapy procedures on endocrine system, with 278 ICD-10-PCS codes across 4 root operations, 270 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 4 operations · 278 codes
| Chars 1–3 | Root Operation | Codes | Billable |
|---|---|---|---|
| DG0 | Beam RadiationA type of radiation therapy that uses a machine to aim high-energy rays at the cancer from outside of the body | 72 | 70 |
| DG1 | BrachytherapyA type of radiation therapy in which radioactive material sealed in needles, seeds, wires, or catheters is placed directly into or near a tumor | 142 | 140 |
| DG2 | Stereotactic RadiosurgeryA type of external radiation therapy that uses special equipment to position the patient and precisely give a single large dose of radiation to a tumor | 32 | 30 |
| DGY | Other Radiation | 32 | 30 |
The info icon shows the official root operation definition and previews the codes in that range.
About the DG Body System
The ICD-10-PCS root operation DG represents various types of Radiation Therapy applied to the Endocrine System. This root operation involves the targeted use of radiation to treat disease, primarily cancers affecting endocrine glands.
Radiation Therapy in the endocrine system can be delivered through several specific methods. Beam Radiation (DG0) directs high-energy rays externally at the tumor using specialized machines. Brachytherapy (DG1) involves placing radioactive material directly inside or near the tumor for localized treatment. Stereotactic Radiosurgery (DG2) uses advanced technology to precisely focus a single, high dose of radiation, minimizing damage to surrounding tissue. The category also includes Other Radiation (DGY) for methods not otherwise classified. These codes ensure accurate documentation of the radiation treatment approach used in managing endocrine system conditions.
Questions About This Page
How many codes are in the DG body system?
The DG body system contains 278 ICD-10-PCS codes in FY 2026, organized into 4 root operations. 270 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.
