ICD-10-PCS Tabular Index · Section D · FY 2026 DG1

DG1 Brachytherapy - Endocrine System ICD-10-PCS

The DG1 code range contains 71 ICD-10-PCS codes for Brachytherapy procedures on the endocrine system. 70 of the codes are billable and valid for inpatient claim submission in fiscal year 2026.

✓ Built from the official CMS FY 2026 datasetEffective Oct 1, 2025 – Sep 30, 2026
71
Procedure Codes
70
Billable Codes
DG1
Characters 1–3
DG
Parent Body System

Root Operation Definition

Brachytherapy: A type of radiation therapy in which radioactive material sealed in needles, seeds, wires, or catheters is placed directly into or near a tumor.

ICD-10-PCS

Codes in the DG1 Range 71 codes · 70 billable

71 of 71 shown
  • DG1 Radiation Therapy, Endocrine System, BrachytherapyNon-billable header
  • DG1097Z High Dose Rate (HDR) Brachytherapy of Pituitary Gland using Cesium 137 (Cs-137)
  • DG1098Z High Dose Rate (HDR) Brachytherapy of Pituitary Gland using Iridium 192 (Ir-192)
  • DG1099Z High Dose Rate (HDR) Brachytherapy of Pituitary Gland using Iodine 125 (I-125)
  • DG109BZ High Dose Rate (HDR) Brachytherapy of Pituitary Gland using Palladium 103 (Pd-103)
  • DG109CZ High Dose Rate (HDR) Brachytherapy of Pituitary Gland using Californium 252 (Cf-252)
  • DG109YZ High Dose Rate (HDR) Brachytherapy of Pituitary Gland using Other Isotope
  • DG10B6Z Low Dose Rate (LDR) Brachytherapy of Pituitary Gland using Cesium 131 (Cs-131)
  • DG10B7Z Low Dose Rate (LDR) Brachytherapy of Pituitary Gland using Cesium 137 (Cs-137)
  • DG10B8Z Low Dose Rate (LDR) Brachytherapy of Pituitary Gland using Iridium 192 (Ir-192)
  • DG10B9Z Low Dose Rate (LDR) Brachytherapy of Pituitary Gland using Iodine 125 (I-125)
  • DG10BB1 Low Dose Rate (LDR) Brachytherapy of Pituitary Gland using Palladium 103 (Pd-103), Unidirectional Source
  • DG10BBZ Low Dose Rate (LDR) Brachytherapy of Pituitary Gland using Palladium 103 (Pd-103)
  • DG10BCZ Low Dose Rate (LDR) Brachytherapy of Pituitary Gland using Californium 252 (Cf-252)
  • DG10BYZ Low Dose Rate (LDR) Brachytherapy of Pituitary Gland using Other Isotope
  • DG1197Z High Dose Rate (HDR) Brachytherapy of Pineal Body using Cesium 137 (Cs-137)
  • DG1198Z High Dose Rate (HDR) Brachytherapy of Pineal Body using Iridium 192 (Ir-192)
  • DG1199Z High Dose Rate (HDR) Brachytherapy of Pineal Body using Iodine 125 (I-125)
  • DG119BZ High Dose Rate (HDR) Brachytherapy of Pineal Body using Palladium 103 (Pd-103)
  • DG119CZ High Dose Rate (HDR) Brachytherapy of Pineal Body using Californium 252 (Cf-252)
  • DG119YZ High Dose Rate (HDR) Brachytherapy of Pineal Body using Other Isotope
  • DG11B6Z Low Dose Rate (LDR) Brachytherapy of Pineal Body using Cesium 131 (Cs-131)
  • DG11B7Z Low Dose Rate (LDR) Brachytherapy of Pineal Body using Cesium 137 (Cs-137)
  • DG11B8Z Low Dose Rate (LDR) Brachytherapy of Pineal Body using Iridium 192 (Ir-192)
  • DG11B9Z Low Dose Rate (LDR) Brachytherapy of Pineal Body using Iodine 125 (I-125)
  • DG11BB1 Low Dose Rate (LDR) Brachytherapy of Pineal Body using Palladium 103 (Pd-103), Unidirectional Source
  • DG11BBZ Low Dose Rate (LDR) Brachytherapy of Pineal Body using Palladium 103 (Pd-103)
  • DG11BCZ Low Dose Rate (LDR) Brachytherapy of Pineal Body using Californium 252 (Cf-252)
  • DG11BYZ Low Dose Rate (LDR) Brachytherapy of Pineal Body using Other Isotope
  • DG1297Z High Dose Rate (HDR) Brachytherapy of Adrenal Glands using Cesium 137 (Cs-137)
  • DG1298Z High Dose Rate (HDR) Brachytherapy of Adrenal Glands using Iridium 192 (Ir-192)
  • DG1299Z High Dose Rate (HDR) Brachytherapy of Adrenal Glands using Iodine 125 (I-125)
  • DG129BZ High Dose Rate (HDR) Brachytherapy of Adrenal Glands using Palladium 103 (Pd-103)
  • DG129CZ High Dose Rate (HDR) Brachytherapy of Adrenal Glands using Californium 252 (Cf-252)
  • DG129YZ High Dose Rate (HDR) Brachytherapy of Adrenal Glands using Other Isotope
  • DG12B6Z Low Dose Rate (LDR) Brachytherapy of Adrenal Glands using Cesium 131 (Cs-131)
  • DG12B7Z Low Dose Rate (LDR) Brachytherapy of Adrenal Glands using Cesium 137 (Cs-137)
  • DG12B8Z Low Dose Rate (LDR) Brachytherapy of Adrenal Glands using Iridium 192 (Ir-192)
  • DG12B9Z Low Dose Rate (LDR) Brachytherapy of Adrenal Glands using Iodine 125 (I-125)
  • DG12BB1 Low Dose Rate (LDR) Brachytherapy of Adrenal Glands using Palladium 103 (Pd-103), Unidirectional Source
  • DG12BBZ Low Dose Rate (LDR) Brachytherapy of Adrenal Glands using Palladium 103 (Pd-103)
  • DG12BCZ Low Dose Rate (LDR) Brachytherapy of Adrenal Glands using Californium 252 (Cf-252)
  • DG12BYZ Low Dose Rate (LDR) Brachytherapy of Adrenal Glands using Other Isotope
  • DG1497Z High Dose Rate (HDR) Brachytherapy of Parathyroid Glands using Cesium 137 (Cs-137)
  • DG1498Z High Dose Rate (HDR) Brachytherapy of Parathyroid Glands using Iridium 192 (Ir-192)
  • DG1499Z High Dose Rate (HDR) Brachytherapy of Parathyroid Glands using Iodine 125 (I-125)
  • DG149BZ High Dose Rate (HDR) Brachytherapy of Parathyroid Glands using Palladium 103 (Pd-103)
  • DG149CZ High Dose Rate (HDR) Brachytherapy of Parathyroid Glands using Californium 252 (Cf-252)
  • DG149YZ High Dose Rate (HDR) Brachytherapy of Parathyroid Glands using Other Isotope
  • DG14B6Z Low Dose Rate (LDR) Brachytherapy of Parathyroid Glands using Cesium 131 (Cs-131)
  • DG14B7Z Low Dose Rate (LDR) Brachytherapy of Parathyroid Glands using Cesium 137 (Cs-137)
  • DG14B8Z Low Dose Rate (LDR) Brachytherapy of Parathyroid Glands using Iridium 192 (Ir-192)
  • DG14B9Z Low Dose Rate (LDR) Brachytherapy of Parathyroid Glands using Iodine 125 (I-125)
  • DG14BB1 Low Dose Rate (LDR) Brachytherapy of Parathyroid Glands using Palladium 103 (Pd-103), Unidirectional Source
  • DG14BBZ Low Dose Rate (LDR) Brachytherapy of Parathyroid Glands using Palladium 103 (Pd-103)
  • DG14BCZ Low Dose Rate (LDR) Brachytherapy of Parathyroid Glands using Californium 252 (Cf-252)
  • DG14BYZ Low Dose Rate (LDR) Brachytherapy of Parathyroid Glands using Other Isotope
  • DG1597Z High Dose Rate (HDR) Brachytherapy of Thyroid using Cesium 137 (Cs-137)
  • DG1598Z High Dose Rate (HDR) Brachytherapy of Thyroid using Iridium 192 (Ir-192)
  • DG1599Z High Dose Rate (HDR) Brachytherapy of Thyroid using Iodine 125 (I-125)
  • DG159BZ High Dose Rate (HDR) Brachytherapy of Thyroid using Palladium 103 (Pd-103)
  • DG159CZ High Dose Rate (HDR) Brachytherapy of Thyroid using Californium 252 (Cf-252)
  • DG159YZ High Dose Rate (HDR) Brachytherapy of Thyroid using Other Isotope
  • DG15B6Z Low Dose Rate (LDR) Brachytherapy of Thyroid using Cesium 131 (Cs-131)
  • DG15B7Z Low Dose Rate (LDR) Brachytherapy of Thyroid using Cesium 137 (Cs-137)
  • DG15B8Z Low Dose Rate (LDR) Brachytherapy of Thyroid using Iridium 192 (Ir-192)
  • DG15B9Z Low Dose Rate (LDR) Brachytherapy of Thyroid using Iodine 125 (I-125)
  • DG15BB1 Low Dose Rate (LDR) Brachytherapy of Thyroid using Palladium 103 (Pd-103), Unidirectional Source
  • DG15BBZ Low Dose Rate (LDR) Brachytherapy of Thyroid using Palladium 103 (Pd-103)
  • DG15BCZ Low Dose Rate (LDR) Brachytherapy of Thyroid using Californium 252 (Cf-252)
  • DG15BYZ Low Dose Rate (LDR) Brachytherapy of Thyroid using Other Isotope

About the DG1 Code Range

The ICD-10-PCS root operation Brachytherapy (code starting with DG1) refers to a form of Radiation Therapy where a radioactive source is placed directly inside or next to the target tissue. This operation is specifically used within the Endocrine System to treat various glands by delivering localized radiation.

Brachytherapy in the ICD-10-PCS system covers treatments for body parts such as the Pituitary Gland, Pineal Body, Adrenal Glands, Parathyroid Glands, and Thyroid. The codes differentiate between high dose rate (HDR) and low dose rate (LDR) approaches and specify the radioactive isotopes used, including Cesium 131, Cesium 137, Iridium 192, Iodine 125, Palladium 103, Californium 252, and others. For example, code DG1097Z represents HDR brachytherapy of the Pituitary Gland using Cesium 137, while DG15B9Z describes LDR brachytherapy of the Thyroid using Iodine 125.

These detailed codes help accurately document the type, site, and radiation source for endocrine brachytherapy procedures, essential for precise clinical and billing records.

Questions About This Page

How many billable codes are in the DG1 range?

Of the 71 codes in this range, 70 are billable and valid for inpatient claim submission from October 1, 2025 through September 30, 2026. Table header codes group them but cannot be reported on claims.

What does the DG1 range classify?

The range classifies Brachytherapy procedures, a type of radiation therapy in which radioactive material sealed in needles, seeds, wires, or catheters is placed directly into or near a tumor, performed on the endocrine system. Each code adds the body part, approach, device, and qualifier in characters four through seven, and links to its own reference page.

Related References

All ICD-10-PCS SectionsAll of Radiation Therapy (D)All of Body System DGICD-10-PCS Code LookupICD-10-CM Codes ListMS-DRG ReferenceMedicare Code Edits

Source: CMS FY 2026 ICD-10-PCS order file and code tables, effective October 1, 2025 through September 30, 2026.