ICD-10-PCS 2027 procedure code
CH221ZZTomographic (Tomo) Nuclear Medicine Imaging of Bilateral Breasts using Technetium 99m (Tc-99m)
Short description: Tomo Nucl Med Imag of Bilat Breast using Technetium 99m
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 CH221ZZ
CH221ZZ is the ICD-10-PCS code for a tomographic (tomo) nuclear medicine imaging procedure on the bilateral breasts using a technetium 99m (tc-99m) approach with none (qualifier: none). In ICD-10-PCS, tomographic (tomo) nuclear medicine imaging means introduction of radioactive materials into the body for three dimensional display of images developed from the capture of radioactive emissions.
In plain terms, this corresponds to scan of other sites, the ICD-9-CM procedure title it maps to (92.19).
For a different body part, codes include CH201ZZ (right breast) and CH211ZZ (left breast).
The same procedure with a different approach is coded CH22SZZ (thallium 201 (tl-201)) and CH22YZZ (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
- HSkin, Subcutaneous Tissue and Breast
- 3. Type
- 2Tomographic (Tomo) Nuclear Medicine Imaging
Introduction of radioactive materials into the body for three dimensional display of images developed from the capture of radioactive emissions
- 4. Body Part
- 2Breasts, Bilateral
- 5. Radionuclide
- 1Technetium 99m (Tc-99m)
- 6. Qualifier
- ZNone
- 7. Qualifier
- ZNone
Other versions of this procedure
Different body part
Different radionuclide
ICD-9-CM equivalent
Converter →- 92.19Scan of other sitesapproximate
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 CH221ZZ
Is CH221ZZ a valid ICD-10-PCS code for 2027?
- Yes. CH221ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
What is the ICD-9 procedure code for CH221ZZ?
- The CMS GEMs map CH221ZZ to ICD-9-CM 92.19 (Scan of other sites).