D0Y1CZZIntraoperative Radiation Therapy (IORT) of Brain Stem

Radiation Therapy›Central and Peripheral Nervous System›Other Radiation

Billable / Specific Code

ICD-10-PCS D0Y1CZZ

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

D0Y1CZZ is a billable ICD-10-PCS procedure code for Intraoperative Radiation Therapy (IORT) of Brain Stem. 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 Radiation therapy, NEC.

Code Identity

ICD-10-PCS Code

D0Y1CZZ

Billable Status

Yes — Valid for Submission

Code Describes

Intraoperative Radiation Therapy (IORT) of Brain Stem

Short Description

Intraoperative Radiation Therapy (IORT) of Brain Stem

Same as the full description in the CMS dataset.

Parent Code

D0Y

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	0	Central and Peripheral Nervous System
3	Modality	Y	Other Radiation
4	TreatmentSite	1	Brain Stem
5	ModalityQualifier	C	Intraoperative Radiation Therapy (IORT)
6	Isotope	Z	None
7	Qualifier	Z	None

In the ICD-10-PCS Alphabetic Index

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

Intraoperative Radiation Therapy (IORT), Brain Stem

Direct entry for this code

Browse the full ICD-10-PCS Alphabetic Index →

Clinical Classification (CCSR)

AHRQ groups this procedure code into these clinical categories.

RAD004

Radiation therapy, NEC

Clinical domain: Radiation Therapy

Code History

Replaces previously assigned code(s):

D0013Z0 — Beam Radiation of Brain Stem using Electrons, Intraoperative

Similar Procedure Codes

Questions About D0Y1CZZ

Is D0Y1CZZ a billable code?

Yes. This is a complete seven-character ICD-10-PCS code, specific enough to report Intraoperative Radiation Therapy (IORT) of Brain Stem on inpatient claims from October 1, 2026 through September 30, 2027.

What do the characters in D0Y1CZZ mean?

The code breaks down character by character: the 1st character D is the Section (Radiation Therapy); the 2nd character 0 is the Body System (Central and Peripheral Nervous System); the 3rd character Y is the Modality (Other Radiation); the 4th character 1 is the TreatmentSite (Brain Stem); the 5th character C is the ModalityQualifier (Intraoperative Radiation Therapy (IORT)); the 6th character Z is the Isotope (None); the 7th character Z is the Qualifier (None).