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ICD-10-PCS 2027 procedure code

CT631ZZNonimaging Nuclear Medicine Assay of Kidneys, Ureters and Bladder using Technetium 99m (Tc-99m)

✓ Valid for 2027

Short description: Nonimag Nucl Med Assay of KUB 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 CT631ZZ

CT631ZZ is the ICD-10-PCS code for a nonimaging nuclear medicine assay procedure on the kidneys, ureters and bladder using a technetium 99m (tc-99m) approach with none (qualifier: none). In ICD-10-PCS, nonimaging nuclear medicine assay means introduction of radioactive materials into the body for the study of body fluids and blood elements, by the detection of radioactive emissions.

In plain terms, this corresponds to renal scan and radioisotope function study, the ICD-9-CM procedure title it maps to (92.03).

The same procedure with a different approach is coded CT63FZZ (iodine 123 (I-123)), CT63GZZ (iodine 131 (I-131)), CT63HZZ (iodine 125 (I-125)) and CT63YZZ (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
TUrinary System
3. Type
6Nonimaging Nuclear Medicine Assay

Introduction of radioactive materials into the body for the study of body fluids and blood elements, by the detection of radioactive emissions

4. Body Part
3Kidneys, Ureters and Bladder
5. Radionuclide
1Technetium 99m (Tc-99m)
6. Qualifier
ZNone
7. Qualifier
ZNone

Other versions of this procedure

ICD-9-CM equivalent

Converter →
  • 92.03Renal scan and radioisotope function studyapproximate

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 CT631ZZ

Is CT631ZZ a valid ICD-10-PCS code for 2027?

Yes. CT631ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

What is the ICD-9 procedure code for CT631ZZ?

The CMS GEMs map CT631ZZ to ICD-9-CM 92.03 (Renal scan and radioisotope function study).