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ICD-10-PCS 2027 procedure code

C05YYZZNonimaging Nuclear Medicine Probe of Central Nervous System using Other Radionuclide

✓ Valid for 2027

Short description: Nonimag Nucl Med Prob of CNS using Oth Radionuclide

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 C05YYZZ

C05YYZZ is the ICD-10-PCS code for a nonimaging nuclear medicine probe procedure on the central nervous system using an other radionuclide 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 C050YZZ (brain).

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
0Central Nervous System
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
YCentral Nervous System
5. Radionuclide
YOther Radionuclide
6. Qualifier
ZNone
7. Qualifier
ZNone

Other versions of this procedure

Different body part

ICD-9-CM equivalent

Converter →
  • 92.09Other 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 C05YYZZ

Is C05YYZZ a valid ICD-10-PCS code for 2027?

Yes. C05YYZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

What is the ICD-9 procedure code for C05YYZZ?

The CMS GEMs map C05YYZZ to ICD-9-CM 92.09 (Other radioisotope function studies).