ICD-10-PCS 2027 procedure code
CW561ZZNonimaging Nuclear Medicine Probe of Chest and Neck using Technetium 99m (Tc-99m)
Short description: Nonimag Nucl Med Prob of Chest & Neck 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 CW561ZZ
CW561ZZ is the ICD-10-PCS code for a nonimaging nuclear medicine probe procedure on the chest and neck using a technetium 99m (tc-99m) approach with none (qualifier: none). In ICD-10-PCS, nonimaging nuclear medicine probe means introduction of radioactive materials into the body for the study of distribution and fate of certain substances by the detection of radioactive emissions; or, alternatively, measurement of absorption of radioactive emissions from an external source.
In plain terms, this corresponds to other radioisotope function studies, the ICD-9-CM procedure title it maps to (92.09).
For a different body part, codes include CW501ZZ (abdomen), CW511ZZ (abdomen and pelvis), CW531ZZ (chest), CW541ZZ (chest and abdomen), CW5B1ZZ (head and neck), CW5D1ZZ (lower extremity) and 2 more.
The same procedure with a different approach is coded CW56DZZ (indium 111 (in-111)) and CW56YZZ (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
- 5Nonimaging Nuclear Medicine Probe
Introduction of radioactive materials into the body for the study of distribution and fate of certain substances by the detection of radioactive emissions; or, alternatively, measurement of absorption of radioactive emissions from an external source
- 4. Body Part
- 6Chest and Neck
- 5. Radionuclide
- 1Technetium 99m (Tc-99m)
- 6. Qualifier
- ZNone
- 7. Qualifier
- ZNone
Other versions of this procedure
ICD-9-CM equivalent
Converter →- 92.09Other 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 CW561ZZ
Is CW561ZZ a valid ICD-10-PCS code for 2027?
- Yes. CW561ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
What is the ICD-9 procedure code for CW561ZZ?
- The CMS GEMs map CW561ZZ to ICD-9-CM 92.09 (Other radioisotope function studies).