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ICD-10-PCS 2027 procedure code

CW73NZZSystemic Nuclear Medicine Therapy of Chest using Phosphorus 32 (P-32)

✓ Valid for 2027

Short description: Sys Nucl Med Therapy of Chest using Phosphorus 32

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 CW73NZZ

CW73NZZ is the ICD-10-PCS code for a systemic nuclear medicine therapy procedure on the chest using a phosphorus 32 (P-32) approach with none (qualifier: none). In ICD-10-PCS, systemic nuclear medicine therapy means introduction of unsealed radioactive materials into the body for treatment.

In plain terms, this corresponds to injection or instillation of radioisotopes, the ICD-9-CM procedure title it maps to (92.28).

For a different body part, codes include CW70NZZ (abdomen) and CW7NNZZ (whole body).

The same procedure with a different approach is coded CW73YZZ (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
WAnatomical Regions
3. Type
7Systemic Nuclear Medicine Therapy

Introduction of unsealed radioactive materials into the body for treatment

4. Body Part
3Chest
5. Radionuclide
NPhosphorus 32 (P-32)
6. Qualifier
ZNone
7. Qualifier
ZNone

Other versions of this procedure

Different radionuclide

ICD-9-CM equivalent

Converter →
  • 92.28Injection or instillation of radioisotopesapproximate

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 CW73NZZ

Is CW73NZZ a valid ICD-10-PCS code for 2027?

Yes. CW73NZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

What is the ICD-9 procedure code for CW73NZZ?

The CMS GEMs map CW73NZZ to ICD-9-CM 92.28 (Injection or instillation of radioisotopes).