DW1YBB1Low Dose Rate (LDR) Brachytherapy of Lower Extremity using Palladium 103 (Pd-103), Unidirectional Source

Radiation Therapy›Anatomical Regions›Brachytherapy

Billable / Specific Code

ICD-10-PCS DW1YBB1

CMS Source: FY 2026 ICD-10-PCS dataset. Effective Oct 1, 2025 – Sep 30, 2026.

DW1YBB1 is a billable ICD-10-PCS procedure code for Low Dose Rate (LDR) Brachytherapy of Lower Extremity using Palladium 103 (Pd-103), Unidirectional Source. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). In AHRQ's Clinical Classifications Software (CCSR), this procedure falls under Brachytherapy.

Code Identity

ICD-10-PCS Code

DW1YBB1

Billable Status

Yes — Valid for Submission

Code Describes

Low Dose Rate (LDR) Brachytherapy of Lower Extremity using Palladium 103 (Pd-103), Unidirectional Source

Short Description

LDR Brachytherapy of Low Extrem using Pd-103, Unidirect

Parent Code

DW1

PCS Table Breakdown

Each ICD-10-PCS code is built from seven characters, each an axis of the procedure. Hover or tap the icons for the official CMS definitions.

Position	Designation	Value	Meaning
1	Section	D	Radiation Therapy
2	Body System	W	Anatomical Regions
3	Modality	1	Brachytherapy
4	TreatmentSite	Y	Lower Extremity
5	ModalityQualifier	B	Low Dose Rate (LDR)
6	Isotope	B	Palladium 103 (Pd-103)
7	Qualifier	1	Unidirectional Source

Clinical Classification (CCSR)

AHRQ groups DW1YBB1 into these clinical categories.

RAD002

Brachytherapy

Clinical domain: Radiation Therapy

Similar Procedure Codes

Questions About DW1YBB1

Is DW1YBB1 a billable code?

Yes. DW1YBB1 is a complete seven-character ICD-10-PCS code, specific enough to report Low Dose Rate (LDR) Brachytherapy of Lower Extremity using Palladium 103 (Pd-103), Unidirectional Source on inpatient claims from October 1, 2025 through September 30, 2026.

What do the characters in DW1YBB1 mean?

DW1YBB1 breaks down character by character: the 1st character D is the Section (Radiation Therapy); the 2nd character W is the Body System (Anatomical Regions); the 3rd character 1 is the Modality (Brachytherapy); the 4th character Y is the TreatmentSite (Lower Extremity); the 5th character B is the ModalityQualifier (Low Dose Rate (LDR)); the 6th character B is the Isotope (Palladium 103 (Pd-103)); the 7th character 1 is the Qualifier (Unidirectional Source).