CW7GGZZSystemic Nuclear Medicine Therapy of Thyroid using Iodine 131 (I-131)
- Billable / Specific Code
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 2027 (October 1, 2026 through September 30, 2027). The root operation Systemic Nuclear Medicine Therapy involves introduction of unsealed radioactive materials into the body for treatment. In AHRQ's Clinical Classifications Software (CCSR), this procedure falls under Radionuclide therapy and non-imaging procedures.
Code Identity
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 |
In the ICD-10-PCS Alphabetic Index
These FY 2027 ICD-10-PCS Alphabetic Index entries lead to this code:
To code systemic nuclear medicine therapy of the thyroid, open the FY 2027 ICD-10-PCS Alphabetic Index at Systemic Nuclear Medicine Therapy, then the subterm Thyroid. The index leads to table CW7, where the radionuclide, qualifier and qualifier values shown in the breakdown above complete the seven-character code CW7GGZZ.
Clinical Classification (CCSR)
AHRQ groups this procedure code into these clinical categories.
Convert to ICD-9-PCS
Closest ICD-9-PCS equivalents for this code under the General Equivalence Mappings.
Similar Procedure Codes
Questions About CW7GGZZ
Is CW7GGZZ a billable code?
Yes. This 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, 2026 through September 30, 2027.
What do the characters in CW7GGZZ mean?
The code 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 (Injection or instillation of radioisotopes). The mapping is approximate, so confirm it fits the documentation.
