ICD-10-PCS 2027 procedure code
CG12FZZPlanar Nuclear Medicine Imaging of Thyroid Gland using Iodine 123 (I-123)
Short description: Planar Nucl Med Imag of Thyroid Gland using Iodine 123
Code unchanged since ICD-10-PCS took effect on October 1, 2015. Source: official FY2027 ICD-10-PCS release from CMS. Page updated September 29, 2026. About our data
About CG12FZZ
CG12FZZ is the ICD-10-PCS code for a planar nuclear medicine imaging procedure on the thyroid gland using an iodine 123 (I-123) approach with none (qualifier: none). In ICD-10-PCS, planar nuclear medicine imaging means introduction of radioactive materials into the body for single plane display of images developed from the capture of radioactive emissions.
In plain terms, this corresponds to thyroid scan and radioisotope function studies, the ICD-9-CM procedure title it maps to (92.01).
The same procedure with a different approach is coded CG121ZZ (technetium 99m (tc-99m)), CG12GZZ (iodine 131 (I-131)) and CG12YZZ (other radionuclide).
It doesn't appear in the MS-DRG procedure index, so on its own it doesn't change the DRG assignment.
It has been valid since ICD-10-PCS took effect on October 1, 2015.
What each character means
- 1. Section
- CNuclear Medicine
- 2. Body System
- GEndocrine System
- 3. Type
- 1Planar Nuclear Medicine Imaging
Introduction of radioactive materials into the body for single plane display of images developed from the capture of radioactive emissions
- 4. Body Part
- 2Thyroid Gland
- 5. Radionuclide
- FIodine 123 (I-123)
- 6. Qualifier
- ZNone
- 7. Qualifier
- ZNone
Other versions of this procedure
Different radionuclide
ICD-9-CM equivalent
Converter →- 92.01Thyroid scan and radioisotope function studiesapproximate
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about CG12FZZ
Is CG12FZZ a valid ICD-10-PCS code for 2027?
- Yes. CG12FZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
What is the ICD-9 procedure code for CG12FZZ?
- The CMS GEMs map CG12FZZ to ICD-9-CM 92.01 (Thyroid scan and radioisotope function studies).