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ICD-10-PCS 2027 procedure code

B2231ZZComputerized Tomography (CT Scan) of Multiple Coronary Artery Bypass Grafts using Low Osmolar Contrast

✓ Valid for 2027

Short description: CT Scan of Mult Cor A Graft using L Osm Contrast

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 B2231ZZ

B2231ZZ is the ICD-10-PCS code for a computerized tomography (CT scan) procedure on the coronary artery bypass grafts, multiple using a low osmolar approach with none (qualifier: none). In ICD-10-PCS, computerized tomography (CT scan) means computer reformatted digital display of multiplanar images developed from the capture of multiple exposures of external ionizing radiation.

In plain terms, this corresponds to other computerized axial tomography, the ICD-9-CM procedure title it maps to (88.38).

For a different body part, codes include B2211ZZ (coronary arteries, multiple) and B2261ZZ (heart, right and left).

The same procedure with a different approach is coded B2230ZZ (high osmolar), B223YZZ (other contrast) and B223ZZZ (none).

With a different device, use B22310Z (unenhanced and enhanced).

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
BImaging
2. Body System
2Heart
3. Type
2Computerized Tomography (CT Scan)

Computer reformatted digital display of multiplanar images developed from the capture of multiple exposures of external ionizing radiation

4. Body Part
3Coronary Artery Bypass Grafts, Multiple
5. Contrast
1Low Osmolar
6. Qualifier
ZNone
7. Qualifier
ZNone

Other versions of this procedure

ICD-9-CM equivalent

Converter →
  • 88.38Other computerized axial tomographyapproximate

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 B2231ZZ

Is B2231ZZ a valid ICD-10-PCS code for 2027?

Yes. B2231ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

What is the ICD-9 procedure code for B2231ZZ?

The CMS GEMs map B2231ZZ to ICD-9-CM 88.38 (Other computerized axial tomography).