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ICD-10-PCS 2027 procedure code

CW231ZZTomographic (Tomo) Nuclear Medicine Imaging of Chest using Technetium 99m (Tc-99m)

✓ Valid for 2027

Short description: Tomo Nucl Med Imag of Chest 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 CW231ZZ

CW231ZZ is the ICD-10-PCS code for a tomographic (tomo) nuclear medicine imaging procedure on the chest 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 CW201ZZ (abdomen), CW211ZZ (abdomen and pelvis), CW241ZZ (chest and abdomen), CW261ZZ (chest and neck), CW2B1ZZ (head and neck), CW2D1ZZ (lower extremity) and 2 more.

The same procedure with a different approach is coded CW23DZZ (indium 111 (in-111)), CW23FZZ (iodine 123 (I-123)), CW23GZZ (iodine 131 (I-131)), CW23KZZ (fluorine 18 (F-18)), CW23LZZ (gallium 67 (ga-67)), CW23SZZ (thallium 201 (tl-201)) and 1 more.

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
WAnatomical Regions
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
3Chest
5. Radionuclide
1Technetium 99m (Tc-99m)
6. Qualifier
ZNone
7. Qualifier
ZNone

Other versions of this procedure

ICD-9-CM equivalent

Converter →
  • 92.19Scan of other sitesapproximate

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 CW231ZZ

Is CW231ZZ a valid ICD-10-PCS code for 2027?

Yes. CW231ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

What is the ICD-9 procedure code for CW231ZZ?

The CMS GEMs map CW231ZZ to ICD-9-CM 92.19 (Scan of other sites).