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ICD-10-PCS 2027 procedure code

BB241ZZComputerized Tomography (CT Scan) of Bilateral Lungs using Low Osmolar Contrast

✓ Valid for 2027

Short description: CT Scan of Bi Lung 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 BB241ZZ

BB241ZZ is the ICD-10-PCS code for a computerized tomography (CT scan) procedure on the bilateral lungs 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 computerized axial tomography of thorax, the ICD-9-CM procedure title it maps to (87.41).

For a different body part, codes include BB271ZZ (right tracheobronchial tree), BB281ZZ (left tracheobronchial tree), BB291ZZ (bilateral tracheobronchial trees) and BB2F1ZZ (trachea/airways).

The same procedure with a different approach is coded BB240ZZ (high osmolar), BB24YZZ (other contrast) and BB24ZZZ (none).

With a different device, use BB2410Z (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
BRespiratory 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
4Lungs, Bilateral
5. Contrast
1Low Osmolar
6. Qualifier
ZNone
7. Qualifier
ZNone

Other versions of this procedure

ICD-9-CM equivalent

Converter →
  • 87.41Computerized axial tomography of thoraxapproximate

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 BB241ZZ

Is BB241ZZ a valid ICD-10-PCS code for 2027?

Yes. BB241ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

What is the ICD-9 procedure code for BB241ZZ?

The CMS GEMs map BB241ZZ to ICD-9-CM 87.41 (Computerized axial tomography of thorax).