CG21YZZTomographic (Tomo) Nuclear Medicine Imaging of Parathyroid Glands using Other Radionuclide
- Billable / Specific Code
CG21YZZ is a billable ICD-10-PCS procedure code for Tomographic (Tomo) Nuclear Medicine Imaging of Parathyroid Glands using Other Radionuclide. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027). The root operation Tomographic (Tomo) Nuclear Medicine Imaging involves introduction of radioactive materials into the body for three dimensional display of images developed from the capture of radioactive emissions. In AHRQ's Clinical Classifications Software (CCSR), this procedure falls under Tomographic nuclear medicine imaging.
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 | G | Endocrine System |
| 3 | Type | 2 | Tomographic (Tomo) Nuclear Medicine Imaging |
| 4 | BodyPart | 1 | Parathyroid Glands |
| 5 | Radionuclide | Y | Other Radionuclide |
| 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:
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 CG21YZZ
Is CG21YZZ a billable code?
Yes. This is a complete seven-character ICD-10-PCS code, specific enough to report Tomographic (Tomo) Nuclear Medicine Imaging of Parathyroid Glands using Other Radionuclide on inpatient claims from October 1, 2026 through September 30, 2027.
What do the characters in CG21YZZ mean?
The code breaks down character by character: the 1st character C is the Section (Nuclear Medicine); the 2nd character G is the Body System (Endocrine System); the 3rd character 2 is the Type (Tomographic (Tomo) Nuclear Medicine Imaging); the 4th character 1 is the BodyPart (Parathyroid Glands); the 5th character Y is the Radionuclide (Other Radionuclide); the 6th character Z is the Qualifier (None); the 7th character Z is the Qualifier (None).
What is the ICD-9-PCS equivalent of CG21YZZ?
Under the General Equivalence Mappings, Tomographic (Tomo) Nuclear Medicine Imaging of Parathyroid Glands using Other Radionuclide crosswalks to ICD-9-PCS 92.13 (Parathyroid scan). The mapping is approximate, so confirm it fits the documentation.
