ICD-10-PCS Tabular Index · Section D · FY 2026 DD1

DD1 Brachytherapy - Gastrointestinal System ICD-10-PCS

The DD1 code range contains 99 ICD-10-PCS codes for Brachytherapy procedures on the gastrointestinal system. 98 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
99
Procedure Codes
98
Billable Codes
DD1
Characters 1–3
DD
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 DD1 Range 99 codes · 98 billable

99 of 99 shown
  • DD1 Radiation Therapy, Gastrointestinal System, BrachytherapyNon-billable header
  • DD1097Z High Dose Rate (HDR) Brachytherapy of Esophagus using Cesium 137 (Cs-137)
  • DD1098Z High Dose Rate (HDR) Brachytherapy of Esophagus using Iridium 192 (Ir-192)
  • DD1099Z High Dose Rate (HDR) Brachytherapy of Esophagus using Iodine 125 (I-125)
  • DD109BZ High Dose Rate (HDR) Brachytherapy of Esophagus using Palladium 103 (Pd-103)
  • DD109CZ High Dose Rate (HDR) Brachytherapy of Esophagus using Californium 252 (Cf-252)
  • DD109YZ High Dose Rate (HDR) Brachytherapy of Esophagus using Other Isotope
  • DD10B6Z Low Dose Rate (LDR) Brachytherapy of Esophagus using Cesium 131 (Cs-131)
  • DD10B7Z Low Dose Rate (LDR) Brachytherapy of Esophagus using Cesium 137 (Cs-137)
  • DD10B8Z Low Dose Rate (LDR) Brachytherapy of Esophagus using Iridium 192 (Ir-192)
  • DD10B9Z Low Dose Rate (LDR) Brachytherapy of Esophagus using Iodine 125 (I-125)
  • DD10BB1 Low Dose Rate (LDR) Brachytherapy of Esophagus using Palladium 103 (Pd-103), Unidirectional Source
  • DD10BBZ Low Dose Rate (LDR) Brachytherapy of Esophagus using Palladium 103 (Pd-103)
  • DD10BCZ Low Dose Rate (LDR) Brachytherapy of Esophagus using Californium 252 (Cf-252)
  • DD10BYZ Low Dose Rate (LDR) Brachytherapy of Esophagus using Other Isotope
  • DD1197Z High Dose Rate (HDR) Brachytherapy of Stomach using Cesium 137 (Cs-137)
  • DD1198Z High Dose Rate (HDR) Brachytherapy of Stomach using Iridium 192 (Ir-192)
  • DD1199Z High Dose Rate (HDR) Brachytherapy of Stomach using Iodine 125 (I-125)
  • DD119BZ High Dose Rate (HDR) Brachytherapy of Stomach using Palladium 103 (Pd-103)
  • DD119CZ High Dose Rate (HDR) Brachytherapy of Stomach using Californium 252 (Cf-252)
  • DD119YZ High Dose Rate (HDR) Brachytherapy of Stomach using Other Isotope
  • DD11B6Z Low Dose Rate (LDR) Brachytherapy of Stomach using Cesium 131 (Cs-131)
  • DD11B7Z Low Dose Rate (LDR) Brachytherapy of Stomach using Cesium 137 (Cs-137)
  • DD11B8Z Low Dose Rate (LDR) Brachytherapy of Stomach using Iridium 192 (Ir-192)
  • DD11B9Z Low Dose Rate (LDR) Brachytherapy of Stomach using Iodine 125 (I-125)
  • DD11BB1 Low Dose Rate (LDR) Brachytherapy of Stomach using Palladium 103 (Pd-103), Unidirectional Source
  • DD11BBZ Low Dose Rate (LDR) Brachytherapy of Stomach using Palladium 103 (Pd-103)
  • DD11BCZ Low Dose Rate (LDR) Brachytherapy of Stomach using Californium 252 (Cf-252)
  • DD11BYZ Low Dose Rate (LDR) Brachytherapy of Stomach using Other Isotope
  • DD1297Z High Dose Rate (HDR) Brachytherapy of Duodenum using Cesium 137 (Cs-137)
  • DD1298Z High Dose Rate (HDR) Brachytherapy of Duodenum using Iridium 192 (Ir-192)
  • DD1299Z High Dose Rate (HDR) Brachytherapy of Duodenum using Iodine 125 (I-125)
  • DD129BZ High Dose Rate (HDR) Brachytherapy of Duodenum using Palladium 103 (Pd-103)
  • DD129CZ High Dose Rate (HDR) Brachytherapy of Duodenum using Californium 252 (Cf-252)
  • DD129YZ High Dose Rate (HDR) Brachytherapy of Duodenum using Other Isotope
  • DD12B6Z Low Dose Rate (LDR) Brachytherapy of Duodenum using Cesium 131 (Cs-131)
  • DD12B7Z Low Dose Rate (LDR) Brachytherapy of Duodenum using Cesium 137 (Cs-137)
  • DD12B8Z Low Dose Rate (LDR) Brachytherapy of Duodenum using Iridium 192 (Ir-192)
  • DD12B9Z Low Dose Rate (LDR) Brachytherapy of Duodenum using Iodine 125 (I-125)
  • DD12BB1 Low Dose Rate (LDR) Brachytherapy of Duodenum using Palladium 103 (Pd-103), Unidirectional Source
  • DD12BBZ Low Dose Rate (LDR) Brachytherapy of Duodenum using Palladium 103 (Pd-103)
  • DD12BCZ Low Dose Rate (LDR) Brachytherapy of Duodenum using Californium 252 (Cf-252)
  • DD12BYZ Low Dose Rate (LDR) Brachytherapy of Duodenum using Other Isotope
  • DD1397Z High Dose Rate (HDR) Brachytherapy of Jejunum using Cesium 137 (Cs-137)
  • DD1398Z High Dose Rate (HDR) Brachytherapy of Jejunum using Iridium 192 (Ir-192)
  • DD1399Z High Dose Rate (HDR) Brachytherapy of Jejunum using Iodine 125 (I-125)
  • DD139BZ High Dose Rate (HDR) Brachytherapy of Jejunum using Palladium 103 (Pd-103)
  • DD139CZ High Dose Rate (HDR) Brachytherapy of Jejunum using Californium 252 (Cf-252)
  • DD139YZ High Dose Rate (HDR) Brachytherapy of Jejunum using Other Isotope
  • DD13B6Z Low Dose Rate (LDR) Brachytherapy of Jejunum using Cesium 131 (Cs-131)
  • DD13B7Z Low Dose Rate (LDR) Brachytherapy of Jejunum using Cesium 137 (Cs-137)
  • DD13B8Z Low Dose Rate (LDR) Brachytherapy of Jejunum using Iridium 192 (Ir-192)
  • DD13B9Z Low Dose Rate (LDR) Brachytherapy of Jejunum using Iodine 125 (I-125)
  • DD13BB1 Low Dose Rate (LDR) Brachytherapy of Jejunum using Palladium 103 (Pd-103), Unidirectional Source
  • DD13BBZ Low Dose Rate (LDR) Brachytherapy of Jejunum using Palladium 103 (Pd-103)
  • DD13BCZ Low Dose Rate (LDR) Brachytherapy of Jejunum using Californium 252 (Cf-252)
  • DD13BYZ Low Dose Rate (LDR) Brachytherapy of Jejunum using Other Isotope
  • DD1497Z High Dose Rate (HDR) Brachytherapy of Ileum using Cesium 137 (Cs-137)
  • DD1498Z High Dose Rate (HDR) Brachytherapy of Ileum using Iridium 192 (Ir-192)
  • DD1499Z High Dose Rate (HDR) Brachytherapy of Ileum using Iodine 125 (I-125)
  • DD149BZ High Dose Rate (HDR) Brachytherapy of Ileum using Palladium 103 (Pd-103)
  • DD149CZ High Dose Rate (HDR) Brachytherapy of Ileum using Californium 252 (Cf-252)
  • DD149YZ High Dose Rate (HDR) Brachytherapy of Ileum using Other Isotope
  • DD14B6Z Low Dose Rate (LDR) Brachytherapy of Ileum using Cesium 131 (Cs-131)
  • DD14B7Z Low Dose Rate (LDR) Brachytherapy of Ileum using Cesium 137 (Cs-137)
  • DD14B8Z Low Dose Rate (LDR) Brachytherapy of Ileum using Iridium 192 (Ir-192)
  • DD14B9Z Low Dose Rate (LDR) Brachytherapy of Ileum using Iodine 125 (I-125)
  • DD14BB1 Low Dose Rate (LDR) Brachytherapy of Ileum using Palladium 103 (Pd-103), Unidirectional Source
  • DD14BBZ Low Dose Rate (LDR) Brachytherapy of Ileum using Palladium 103 (Pd-103)
  • DD14BCZ Low Dose Rate (LDR) Brachytherapy of Ileum using Californium 252 (Cf-252)
  • DD14BYZ Low Dose Rate (LDR) Brachytherapy of Ileum using Other Isotope
  • DD1597Z High Dose Rate (HDR) Brachytherapy of Colon using Cesium 137 (Cs-137)
  • DD1598Z High Dose Rate (HDR) Brachytherapy of Colon using Iridium 192 (Ir-192)
  • DD1599Z High Dose Rate (HDR) Brachytherapy of Colon using Iodine 125 (I-125)
  • DD159BZ High Dose Rate (HDR) Brachytherapy of Colon using Palladium 103 (Pd-103)
  • DD159CZ High Dose Rate (HDR) Brachytherapy of Colon using Californium 252 (Cf-252)
  • DD159YZ High Dose Rate (HDR) Brachytherapy of Colon using Other Isotope
  • DD15B6Z Low Dose Rate (LDR) Brachytherapy of Colon using Cesium 131 (Cs-131)
  • DD15B7Z Low Dose Rate (LDR) Brachytherapy of Colon using Cesium 137 (Cs-137)
  • DD15B8Z Low Dose Rate (LDR) Brachytherapy of Colon using Iridium 192 (Ir-192)
  • DD15B9Z Low Dose Rate (LDR) Brachytherapy of Colon using Iodine 125 (I-125)
  • DD15BB1 Low Dose Rate (LDR) Brachytherapy of Colon using Palladium 103 (Pd-103), Unidirectional Source
  • DD15BBZ Low Dose Rate (LDR) Brachytherapy of Colon using Palladium 103 (Pd-103)
  • DD15BCZ Low Dose Rate (LDR) Brachytherapy of Colon using Californium 252 (Cf-252)
  • DD15BYZ Low Dose Rate (LDR) Brachytherapy of Colon using Other Isotope
  • DD1797Z High Dose Rate (HDR) Brachytherapy of Rectum using Cesium 137 (Cs-137)
  • DD1798Z High Dose Rate (HDR) Brachytherapy of Rectum using Iridium 192 (Ir-192)
  • DD1799Z High Dose Rate (HDR) Brachytherapy of Rectum using Iodine 125 (I-125)
  • DD179BZ High Dose Rate (HDR) Brachytherapy of Rectum using Palladium 103 (Pd-103)
  • DD179CZ High Dose Rate (HDR) Brachytherapy of Rectum using Californium 252 (Cf-252)
  • DD179YZ High Dose Rate (HDR) Brachytherapy of Rectum using Other Isotope
  • DD17B6Z Low Dose Rate (LDR) Brachytherapy of Rectum using Cesium 131 (Cs-131)
  • DD17B7Z Low Dose Rate (LDR) Brachytherapy of Rectum using Cesium 137 (Cs-137)
  • DD17B8Z Low Dose Rate (LDR) Brachytherapy of Rectum using Iridium 192 (Ir-192)
  • DD17B9Z Low Dose Rate (LDR) Brachytherapy of Rectum using Iodine 125 (I-125)
  • DD17BB1 Low Dose Rate (LDR) Brachytherapy of Rectum using Palladium 103 (Pd-103), Unidirectional Source
  • DD17BBZ Low Dose Rate (LDR) Brachytherapy of Rectum using Palladium 103 (Pd-103)
  • DD17BCZ Low Dose Rate (LDR) Brachytherapy of Rectum using Californium 252 (Cf-252)
  • DD17BYZ Low Dose Rate (LDR) Brachytherapy of Rectum using Other Isotope

About the DD1 Code Range

The ICD-10-PCS root operation Brachytherapy (DD1) refers to delivering radiation therapy internally by placing a radioactive source directly into or near a target area. This operation is categorized under the Radiation Therapy section and is used primarily for treating cancers within specific body systems.

This root operation is applied in brachytherapy of various parts of the Gastrointestinal System, including the Esophagus, Stomach, Duodenum, Jejunum, Ileum, Colon, and Rectum. The ICD-10-PCS codes capture details such as the dose rate—either High Dose Rate (HDR) or Low Dose Rate (LDR)—and the radioactive isotope used, for example, Cesium 137 (Cs-137), Iridium 192 (Ir-192), Iodine 125 (I-125), and others. For instance, code DD1097Z indicates HDR brachytherapy of the esophagus using Cesium 137, while DD11B9Z denotes LDR brachytherapy of the stomach with Iodine 125. These coded variations enable precise documentation of the braid therapy specifics for gastrointestinal cancers and treatments.

Questions About This Page

How many billable codes are in the DD1 range?

Of the 99 codes in this range, 98 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 DD1 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 gastrointestinal 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 DDICD-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.