DWY5GDZIsotope Administration to Whole Body using Iodine 131 (I-131)

Radiation Therapy›Anatomical Regions›Other Radiation

Billable / Specific Code

ICD-10-PCS DWY5GDZ

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

DWY5GDZ is a billable ICD-10-PCS procedure code for Isotope Administration to Whole Body using Iodine 131 (I-131). 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 Radiation therapy, NEC.

Code Identity

ICD-10-PCS Code

DWY5GDZ

Billable Status

Yes — Valid for Submission

Code Describes

Isotope Administration to Whole Body using Iodine 131 (I-131)

Short Description

Isotope Administration to Whole Body using Iodine 131

Parent Code

DWY

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	Y	Other Radiation
4	TreatmentSite	5	Whole Body
5	ModalityQualifier	G	Isotope Administration
6	Isotope	D	Iodine 131 (I-131)
7	Qualifier	Z	None

Clinical Classification (CCSR)

AHRQ groups DWY5GDZ into these clinical categories.

RAD004

Radiation therapy, NEC

Clinical domain: Radiation Therapy

Convert to ICD-9-PCS

Closest ICD-9-PCS equivalents for DWY5GDZ under the General Equivalence Mappings.

92.28

Approximate match.

Similar Procedure Codes

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Questions About DWY5GDZ

Is DWY5GDZ a billable code?

Yes. DWY5GDZ is a complete seven-character ICD-10-PCS code, specific enough to report Isotope Administration to Whole Body using Iodine 131 (I-131) on inpatient claims from October 1, 2025 through September 30, 2026.

What do the characters in DWY5GDZ mean?

DWY5GDZ 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 Y is the Modality (Other Radiation); the 4th character 5 is the TreatmentSite (Whole Body); the 5th character G is the ModalityQualifier (Isotope Administration); the 6th character D is the Isotope (Iodine 131 (I-131)); the 7th character Z is the Qualifier (None).

What is the ICD-9-PCS equivalent of DWY5GDZ?

Under the General Equivalence Mappings, Isotope Administration to Whole Body using Iodine 131 (I-131) crosswalks to ICD-9-PCS 92.28. The mapping is approximate, so confirm it fits the documentation.