ICD-10-PCS 2027 procedure code

C7631ZZNonimaging Nuclear Medicine Assay of Blood using Technetium 99m (Tc-99m)

✓ Valid for 2027

Short description: Nonimag Nucl Med Assay of Blood 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 C7631ZZ

C7631ZZ is the ICD-10-PCS code for a nonimaging nuclear medicine assay procedure on the blood 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 cardiovascular and hematopoietic scan and radioisotope function study, the ICD-9-CM procedure title it maps to (92.05).

The same procedure with a different approach is coded C7637ZZ (cobalt 58 (co-58)), C763CZZ (cobalt 57 (co-57)), C763DZZ (indium 111 (in-111)), C763HZZ (iodine 125 (I-125)), C763WZZ (chromium (cr-51)) and C763YZZ (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: 7Lymphatic and Hematologic 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: 3Blood
5. Radionuclide: 1Technetium 99m (Tc-99m)
6. Qualifier: ZNone
7. Qualifier: ZNone

Other versions of this procedure

Different radionuclide

ICD-9-CM equivalent

Converter →

92.05Cardiovascular and hematopoietic scan and radioisotope function studyapproximate

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 C7631ZZ

Is C7631ZZ a valid ICD-10-PCS code for 2027?: Yes. C7631ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
What is the ICD-9 procedure code for C7631ZZ?: The CMS GEMs map C7631ZZ to ICD-9-CM 92.05 (Cardiovascular and hematopoietic scan and radioisotope function study).