DW1199ZHigh Dose Rate (HDR) Brachytherapy of Head and Neck using Iodine 125 (I-125)

Radiation Therapy›Anatomical Regions›Brachytherapy

Billable / Specific Code

ICD-10-PCS DW1199Z

CMS Source: FY 2027 ICD-10-PCS dataset. Effective Oct 1, 2026 – Sep 30, 2027.

DW1199Z is a billable ICD-10-PCS procedure code for High Dose Rate (HDR) Brachytherapy of Head and Neck using Iodine 125 (I-125). It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027). In AHRQ's Clinical Classifications Software (CCSR), this procedure falls under Brachytherapy.

Code Identity

ICD-10-PCS Code

DW1199Z

Billable Status

Yes — Valid for Submission

Code Describes

High Dose Rate (HDR) Brachytherapy of Head and Neck using Iodine 125 (I-125)

Short Description

HDR Brachytherapy of Head & Neck using Iodine 125

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	1	Head and Neck
5	ModalityQualifier	9	High Dose Rate (HDR)
6	Isotope	9	Iodine 125 (I-125)
7	Qualifier	Z	None

In the ICD-10-PCS Alphabetic Index

These FY 2027 ICD-10-PCS Alphabetic Index entries lead to this code:

Brachytherapy, Head and Neck

Leads to this code's table

Brachytherapy, Neck and Head

Leads to this code's table

To code brachytherapy of the head and neck, open the FY 2027 ICD-10-PCS Alphabetic Index at Brachytherapy, then the subterm Head and Neck. The index leads to table DW1, where the modality qualifier, isotope and qualifier values shown in the breakdown above complete the seven-character code DW1199Z.

Browse the full ICD-10-PCS Alphabetic Index →

Clinical Classification (CCSR)

AHRQ groups this procedure code into these clinical categories.

RAD002

Brachytherapy

Clinical domain: Radiation Therapy

Convert to ICD-9-PCS

Closest ICD-9-PCS equivalents for this code under the General Equivalence Mappings.

92.23

Radioisotopic teleradiotherapy

Approximate match.

Similar Procedure Codes

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Questions About DW1199Z

Is DW1199Z a billable code?

Yes. This is a complete seven-character ICD-10-PCS code, specific enough to report High Dose Rate (HDR) Brachytherapy of Head and Neck using Iodine 125 (I-125) on inpatient claims from October 1, 2026 through September 30, 2027.

What do the characters in DW1199Z mean?

The code 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 1 is the TreatmentSite (Head and Neck); the 5th character 9 is the ModalityQualifier (High Dose Rate (HDR)); the 6th character 9 is the Isotope (Iodine 125 (I-125)); the 7th character Z is the Qualifier (None).

What is the ICD-9-PCS equivalent of DW1199Z?

Under the General Equivalence Mappings, High Dose Rate (HDR) Brachytherapy of Head and Neck using Iodine 125 (I-125) crosswalks to ICD-9-PCS 92.23 (Radioisotopic teleradiotherapy). The mapping is approximate, so confirm it fits the documentation.