CW7GGZZSystemic Nuclear Medicine Therapy of Thyroid using Iodine 131 (I-131)

Nuclear Medicine›Anatomical Regions›Systemic Nuclear Medicine Therapy

Billable / Specific Code

ICD-10-PCS CW7GGZZ

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

CW7GGZZ is a billable ICD-10-PCS procedure code for Systemic Nuclear Medicine Therapy of Thyroid using Iodine 131 (I-131). It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). The root operation Systemic Nuclear Medicine Therapy involves introduction of unsealed radioactive materials into the body for treatment.

Code Identity

ICD-10-PCS Code

CW7GGZZ

Billable Status

Yes — Valid for Submission

Code Describes

Systemic Nuclear Medicine Therapy of Thyroid using Iodine 131 (I-131)

Parent Code

CW7

Short Description

Sys Nucl Med Therapy of Thyroid using Iodine 131

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	C	Nuclear Medicine
2	Body System	W	Anatomical Regions
3	Type	7	Systemic Nuclear Medicine Therapy
4	BodyPart	G	Thyroid
5	Radionuclide	G	Iodine 131 (I-131)
6	Qualifier	Z	None
7	Qualifier	Z	None

Convert to ICD-9-PCS

Closest ICD-9-PCS equivalents for CW7GGZZ under the General Equivalence Mappings.

92.28

Approximate match.

Similar Procedure Codes

Questions About CW7GGZZ

Is CW7GGZZ a billable code?

Yes. CW7GGZZ is a complete seven-character ICD-10-PCS code, specific enough to report Systemic Nuclear Medicine Therapy of Thyroid using Iodine 131 (I-131) on inpatient claims from October 1, 2025 through September 30, 2026.

What do the characters in CW7GGZZ mean?

CW7GGZZ breaks down character by character: the 1st character C is the Section (Nuclear Medicine); the 2nd character W is the Body System (Anatomical Regions); the 3rd character 7 is the Type (Systemic Nuclear Medicine Therapy); the 4th character G is the BodyPart (Thyroid); the 5th character G is the Radionuclide (Iodine 131 (I-131)); the 6th character Z is the Qualifier (None); the 7th character Z is the Qualifier (None).

What is the ICD-9-PCS equivalent of CW7GGZZ?

Under the General Equivalence Mappings, Systemic Nuclear Medicine Therapy of Thyroid using Iodine 131 (I-131) crosswalks to ICD-9-PCS 92.28. The mapping is approximate, so confirm it fits the documentation.