ICD-10-PCS Code For Bile Ducts: Procedure Code Group Overview

The International Classification of Diseases, Tenth Revision, Procedure Coding System (ICD-10-PCS) code group DFY2 includes procedures performed to apply other radiation to tissue in the bile ducts. These ICD-10-PCS codes are used for inpatient documentation when targeted radiation therapy or similar radiation procedures are delivered to the bile ducts as part of treatment. Accurate coding within the ICD-10-PCS DFY2 group is essential for proper inpatient reimbursement, as it captures the procedure performed and determines appropriate case mix and payment.

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Bile Ducts Other Radiation Procedure Overview

This procedure group includes other radiation treatments directed at the bile ducts within the hepatobiliary system and pancreas. Procedures involve delivery of targeted radiation to bile duct tissue for diagnostic or therapeutic purposes within an inpatient radiation therapy setting. Accurate coding ensures the inpatient record reflects the specific radiation procedure performed and supports proper payment and case mix classification.

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
D	Section	Radiation Therapy
F	Body System	Hepatobiliary System and Pancreas
Y	Operation	Other Radiation
2	Body Part	Bile Ducts

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ICD-10-PCS Code For Bile Ducts: Procedure Code Group Overview

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Bile Ducts Other Radiation Procedure Overview

Code Attributes

Character	ICD-10-PCS Category	Code Group Details
D	Section	Radiation Therapy
F	Body System	Hepatobiliary System and Pancreas
Y	Operation	Other Radiation
2	Body Part	Bile Ducts

When to Use

Use codes from this group when an inpatient receives other radiation therapy specifically targeted to the bile ducts. Select the code when the documentation explicitly shows radiation was delivered to the bile ducts as part of the therapeutic or diagnostic care.

ICD-10-PCS Codes

4 rows

ICD-10-PCS Code	Description
DFY27ZZ	Contact Radiation of Bile Ducts
DFY28ZZ	Hyperthermia of Bile Ducts
DFY2CZZ	Intraoperative Radiation Therapy (IORT) of Bile Ducts
DFY2FZZ	Plaque Radiation of Bile Ducts

Typical Clinical Scenarios

An elderly patient with locally advanced cholangiocarcinoma involving the extrahepatic bile ducts is admitted for inpatient targeted intraoperative radiation delivered during a planned surgical resection to reduce local tumor burden and attempt margin control. The procedure is performed in the operating room immediately following tumor debulking, with a delivery device placed directly to the bile duct target under direct visualization. Intraoperative delivery of radiation is chosen because it allows a high radiation dose to the bile duct tumor while minimizing exposure to surrounding liver and gastrointestinal structures. Typical codes: DFY2CZZ
A middle-aged patient presents emergently with obstructive jaundice and cholangitis from a localized bile duct tumor and is taken to the operating room for urgent palliative control of tumor via contact radiation applied directly to the bile duct lumen after biliary decompression. The contact radiation is used in the inpatient setting to reduce intraductal tumor bulk and improve bile flow when endoscopic options are insufficient. The procedure targets the bile duct tissue directly with a contact radiation applicator placed intraductally under direct visualization. Typical codes: DFY27ZZ
A patient with a previously irradiated distal bile duct adenocarcinoma develops a recurrent, focal intraductal lesion not amenable to further external beam therapy; during a scheduled admission for local tumor control, plaque radiation is applied externally to the bile duct region via surgically placed radiation plaque to deliver a localized dose while sparing adjacent organs. This approach is selected when prior therapies limit other radiation options and targeted plaque application can deliver therapeutic dose to the bile duct tissue. Typical codes: DFY2FZZ

Related Codes

DFY0-LIVER-OTHER-RADIATION

ICD-10-PCS Code For Liver: Procedure Code Group Overview

DFY1-GALLBLADDER-OTHER-RADIATION

ICD-10-PCS Code For Gallbladder: Procedure Code Group Overview

DFY3-PANCREAS-OTHER-RADIATION

ICD-10-PCS Code For Pancreas: Procedure Code Group Overview

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

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When to Use

ICD-10-PCS Codes

4 rows

ICD-10-PCS Code	Description
DFY27ZZ	Contact Radiation of Bile Ducts
DFY28ZZ	Hyperthermia of Bile Ducts
DFY2CZZ	Intraoperative Radiation Therapy (IORT) of Bile Ducts
DFY2FZZ	Plaque Radiation of Bile Ducts

Typical Clinical Scenarios

An elderly patient with locally advanced cholangiocarcinoma involving the extrahepatic bile ducts is admitted for inpatient targeted intraoperative radiation delivered during a planned surgical resection to reduce local tumor burden and attempt margin control. The procedure is performed in the operating room immediately following tumor debulking, with a delivery device placed directly to the bile duct target under direct visualization. Intraoperative delivery of radiation is chosen because it allows a high radiation dose to the bile duct tumor while minimizing exposure to surrounding liver and gastrointestinal structures. Typical codes: DFY2CZZ
A middle-aged patient presents emergently with obstructive jaundice and cholangitis from a localized bile duct tumor and is taken to the operating room for urgent palliative control of tumor via contact radiation applied directly to the bile duct lumen after biliary decompression. The contact radiation is used in the inpatient setting to reduce intraductal tumor bulk and improve bile flow when endoscopic options are insufficient. The procedure targets the bile duct tissue directly with a contact radiation applicator placed intraductally under direct visualization. Typical codes: DFY27ZZ
A patient with a previously irradiated distal bile duct adenocarcinoma develops a recurrent, focal intraductal lesion not amenable to further external beam therapy; during a scheduled admission for local tumor control, plaque radiation is applied externally to the bile duct region via surgically placed radiation plaque to deliver a localized dose while sparing adjacent organs. This approach is selected when prior therapies limit other radiation options and targeted plaque application can deliver therapeutic dose to the bile duct tissue. Typical codes: DFY2FZZ

Related Codes

DFY0-LIVER-OTHER-RADIATION

ICD-10-PCS Code For Liver: Procedure Code Group Overview

DFY1-GALLBLADDER-OTHER-RADIATION

ICD-10-PCS Code For Gallbladder: Procedure Code Group Overview

DFY3-PANCREAS-OTHER-RADIATION

ICD-10-PCS Code For Pancreas: Procedure Code Group Overview

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

Published by

Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

ICD-10-PCS Code For Bile Ducts: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Bile Ducts: Procedure Code Group Overview policy alerts

Bile Ducts Other Radiation Procedure Overview

Code Attributes

ICD-10-PCS Code For Bile Ducts: Procedure Code Group Overview

Sign up for ICD-10-PCS Code For Bile Ducts: Procedure Code Group Overview policy alerts

Bile Ducts Other Radiation Procedure Overview

Code Attributes

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

Which procedures are included in the DFY2 ICD-10-PCS code group for bile ducts?

What is the ICD-10-PCS section and body system for these bile duct procedures?

When should DFY2 group codes be used for inpatient documentation?

How does accurate coding of DFY2 procedures affect reimbursement?

Are there related DRGs listed for the DFY2 bile duct radiation procedures?

References

When to Use

ICD-10-PCS Codes

Typical Clinical Scenarios

Related Codes

Which procedures are included in the DFY2 ICD-10-PCS code group for bile ducts?

What is the ICD-10-PCS section and body system for these bile duct procedures?

When should DFY2 group codes be used for inpatient documentation?

How does accurate coding of DFY2 procedures affect reimbursement?

Are there related DRGs listed for the DFY2 bile duct radiation procedures?

References