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ICD-10-PCS 2027 procedure code

BG231ZZComputerized Tomography (CT Scan) of Parathyroid Glands using Low Osmolar Contrast

✓ Valid for 2027

Short description: CT Scan of Parathyroid Gland 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 BG231ZZ

BG231ZZ is the ICD-10-PCS code for a computerized tomography (CT scan) procedure on the parathyroid glands 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 BG221ZZ (bilateral adrenal glands) and BG241ZZ (thyroid gland).

The same procedure with a different approach is coded BG230ZZ (high osmolar), BG23YZZ (other contrast) and BG23ZZZ (none).

With a different device, use BG2310Z (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
GEndocrine System
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
3Parathyroid Glands
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 BG231ZZ

Is BG231ZZ a valid ICD-10-PCS code for 2027?

Yes. BG231ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

What is the ICD-9 procedure code for BG231ZZ?

The CMS GEMs map BG231ZZ to ICD-9-CM 88.38 (Other computerized axial tomography).