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ICD-10-PCS 2027 procedure code

CG12GZZPlanar Nuclear Medicine Imaging of Thyroid Gland using Iodine 131 (I-131)

✓ Valid for 2027

Short description: Planar Nucl Med Imag of Thyroid Gland using Iodine 131

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 CG12GZZ

CG12GZZ is the ICD-10-PCS code for a planar nuclear medicine imaging procedure on the thyroid gland using an iodine 131 (I-131) 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).

For a different body part, codes include CG14GZZ (bilateral adrenal glands).

The same procedure with a different approach is coded CG121ZZ (technetium 99m (tc-99m)), CG12FZZ (iodine 123 (I-123)) 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
GIodine 131 (I-131)
6. Qualifier
ZNone
7. Qualifier
ZNone

Other versions of this procedure

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

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about CG12GZZ

Is CG12GZZ a valid ICD-10-PCS code for 2027?

Yes. CG12GZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

What is the ICD-9 procedure code for CG12GZZ?

The CMS GEMs map CG12GZZ to ICD-9-CM 92.01 (Thyroid scan and radioisotope function studies).