ICD-10-PCS Tabular Index · Section D · FY 2026 DF1

DF1 Brachytherapy - Hepatobiliary System and Pancreas ICD-10-PCS

The DF1 code range contains 57 ICD-10-PCS codes for Brachytherapy procedures on the hepatobiliary system and pancreas. 56 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
57
Procedure Codes
56
Billable Codes
DF1
Characters 1–3
DF
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 DF1 Range 57 codes · 56 billable

57 of 57 shown
  • DF1 Radiation Therapy, Hepatobiliary System and Pancreas, BrachytherapyNon-billable header
  • DF1097Z High Dose Rate (HDR) Brachytherapy of Liver using Cesium 137 (Cs-137)
  • DF1098Z High Dose Rate (HDR) Brachytherapy of Liver using Iridium 192 (Ir-192)
  • DF1099Z High Dose Rate (HDR) Brachytherapy of Liver using Iodine 125 (I-125)
  • DF109BZ High Dose Rate (HDR) Brachytherapy of Liver using Palladium 103 (Pd-103)
  • DF109CZ High Dose Rate (HDR) Brachytherapy of Liver using Californium 252 (Cf-252)
  • DF109YZ High Dose Rate (HDR) Brachytherapy of Liver using Other Isotope
  • DF10B6Z Low Dose Rate (LDR) Brachytherapy of Liver using Cesium 131 (Cs-131)
  • DF10B7Z Low Dose Rate (LDR) Brachytherapy of Liver using Cesium 137 (Cs-137)
  • DF10B8Z Low Dose Rate (LDR) Brachytherapy of Liver using Iridium 192 (Ir-192)
  • DF10B9Z Low Dose Rate (LDR) Brachytherapy of Liver using Iodine 125 (I-125)
  • DF10BB1 Low Dose Rate (LDR) Brachytherapy of Liver using Palladium 103 (Pd-103), Unidirectional Source
  • DF10BBZ Low Dose Rate (LDR) Brachytherapy of Liver using Palladium 103 (Pd-103)
  • DF10BCZ Low Dose Rate (LDR) Brachytherapy of Liver using Californium 252 (Cf-252)
  • DF10BYZ Low Dose Rate (LDR) Brachytherapy of Liver using Other Isotope
  • DF1197Z High Dose Rate (HDR) Brachytherapy of Gallbladder using Cesium 137 (Cs-137)
  • DF1198Z High Dose Rate (HDR) Brachytherapy of Gallbladder using Iridium 192 (Ir-192)
  • DF1199Z High Dose Rate (HDR) Brachytherapy of Gallbladder using Iodine 125 (I-125)
  • DF119BZ High Dose Rate (HDR) Brachytherapy of Gallbladder using Palladium 103 (Pd-103)
  • DF119CZ High Dose Rate (HDR) Brachytherapy of Gallbladder using Californium 252 (Cf-252)
  • DF119YZ High Dose Rate (HDR) Brachytherapy of Gallbladder using Other Isotope
  • DF11B6Z Low Dose Rate (LDR) Brachytherapy of Gallbladder using Cesium 131 (Cs-131)
  • DF11B7Z Low Dose Rate (LDR) Brachytherapy of Gallbladder using Cesium 137 (Cs-137)
  • DF11B8Z Low Dose Rate (LDR) Brachytherapy of Gallbladder using Iridium 192 (Ir-192)
  • DF11B9Z Low Dose Rate (LDR) Brachytherapy of Gallbladder using Iodine 125 (I-125)
  • DF11BB1 Low Dose Rate (LDR) Brachytherapy of Gallbladder using Palladium 103 (Pd-103), Unidirectional Source
  • DF11BBZ Low Dose Rate (LDR) Brachytherapy of Gallbladder using Palladium 103 (Pd-103)
  • DF11BCZ Low Dose Rate (LDR) Brachytherapy of Gallbladder using Californium 252 (Cf-252)
  • DF11BYZ Low Dose Rate (LDR) Brachytherapy of Gallbladder using Other Isotope
  • DF1297Z High Dose Rate (HDR) Brachytherapy of Bile Ducts using Cesium 137 (Cs-137)
  • DF1298Z High Dose Rate (HDR) Brachytherapy of Bile Ducts using Iridium 192 (Ir-192)
  • DF1299Z High Dose Rate (HDR) Brachytherapy of Bile Ducts using Iodine 125 (I-125)
  • DF129BZ High Dose Rate (HDR) Brachytherapy of Bile Ducts using Palladium 103 (Pd-103)
  • DF129CZ High Dose Rate (HDR) Brachytherapy of Bile Ducts using Californium 252 (Cf-252)
  • DF129YZ High Dose Rate (HDR) Brachytherapy of Bile Ducts using Other Isotope
  • DF12B6Z Low Dose Rate (LDR) Brachytherapy of Bile Ducts using Cesium 131 (Cs-131)
  • DF12B7Z Low Dose Rate (LDR) Brachytherapy of Bile Ducts using Cesium 137 (Cs-137)
  • DF12B8Z Low Dose Rate (LDR) Brachytherapy of Bile Ducts using Iridium 192 (Ir-192)
  • DF12B9Z Low Dose Rate (LDR) Brachytherapy of Bile Ducts using Iodine 125 (I-125)
  • DF12BB1 Low Dose Rate (LDR) Brachytherapy of Bile Ducts using Palladium 103 (Pd-103), Unidirectional Source
  • DF12BBZ Low Dose Rate (LDR) Brachytherapy of Bile Ducts using Palladium 103 (Pd-103)
  • DF12BCZ Low Dose Rate (LDR) Brachytherapy of Bile Ducts using Californium 252 (Cf-252)
  • DF12BYZ Low Dose Rate (LDR) Brachytherapy of Bile Ducts using Other Isotope
  • DF1397Z High Dose Rate (HDR) Brachytherapy of Pancreas using Cesium 137 (Cs-137)
  • DF1398Z High Dose Rate (HDR) Brachytherapy of Pancreas using Iridium 192 (Ir-192)
  • DF1399Z High Dose Rate (HDR) Brachytherapy of Pancreas using Iodine 125 (I-125)
  • DF139BZ High Dose Rate (HDR) Brachytherapy of Pancreas using Palladium 103 (Pd-103)
  • DF139CZ High Dose Rate (HDR) Brachytherapy of Pancreas using Californium 252 (Cf-252)
  • DF139YZ High Dose Rate (HDR) Brachytherapy of Pancreas using Other Isotope
  • DF13B6Z Low Dose Rate (LDR) Brachytherapy of Pancreas using Cesium 131 (Cs-131)
  • DF13B7Z Low Dose Rate (LDR) Brachytherapy of Pancreas using Cesium 137 (Cs-137)
  • DF13B8Z Low Dose Rate (LDR) Brachytherapy of Pancreas using Iridium 192 (Ir-192)
  • DF13B9Z Low Dose Rate (LDR) Brachytherapy of Pancreas using Iodine 125 (I-125)
  • DF13BB1 Low Dose Rate (LDR) Brachytherapy of Pancreas using Palladium 103 (Pd-103), Unidirectional Source
  • DF13BBZ Low Dose Rate (LDR) Brachytherapy of Pancreas using Palladium 103 (Pd-103)
  • DF13BCZ Low Dose Rate (LDR) Brachytherapy of Pancreas using Californium 252 (Cf-252)
  • DF13BYZ Low Dose Rate (LDR) Brachytherapy of Pancreas using Other Isotope

About the DF1 Code Range

The ICD-10-PCS root operation Brachytherapy (code DF1) refers to the internal application of radiation therapy directly into a targeted body region. This technique is used specifically within the Radiation Therapy classification to deliver precise treatment to localized areas.

Brachytherapy is commonly applied to the Hepatobiliary System and Pancreas, including the liver, gallbladder, bile ducts, and pancreas. The provided ICD-10-PCS codes distinguish between High Dose Rate (HDR) and Low Dose Rate (LDR) methods of brachytherapy, each utilizing various radioactive isotopes such as Cesium 137 (Cs-137), Iridium 192 (Ir-192), Iodine 125 (I-125), and others. For example, code DF1097Z specifies HDR brachytherapy of the liver using Cs-137, while code DF11B8Z represents LDR brachytherapy of the gallbladder employing Ir-192. This coding system allows precise documentation of the approach and radioactive source used in internal radiation treatment targeting complex abdominal organs.

Questions About This Page

How many billable codes are in the DF1 range?

Of the 57 codes in this range, 56 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 DF1 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 hepatobiliary system and pancreas. 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 DFICD-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.