ICD-10-PCS 2027 procedure code
BT221ZZComputerized Tomography (CT Scan) of Left Kidney using Low Osmolar Contrast
Short description: CT Scan of L Kidney 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 BT221ZZ
BT221ZZ is the ICD-10-PCS code for a computerized tomography (CT scan) procedure on the left kidney 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 kidney, the ICD-9-CM procedure title it maps to (87.71).
For a different body part, codes include BT201ZZ (bladder), BT211ZZ (right kidney), BT231ZZ (bilateral kidneys) and BT291ZZ (kidney transplant).
The same procedure with a different approach is coded BT220ZZ (high osmolar), BT22YZZ (other contrast) and BT22ZZZ (none).
With a different device, use BT2210Z (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
- TUrinary 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
- 2Kidney, Left
- 5. Contrast
- 1Low Osmolar
- 6. Qualifier
- ZNone
- 7. Qualifier
- ZNone
Other versions of this procedure
Different body part
Different contrast
Different qualifier
ICD-9-CM equivalent
Converter →- 87.71Computerized axial tomography of kidneyapproximate
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 BT221ZZ
Is BT221ZZ a valid ICD-10-PCS code for 2027?
- Yes. BT221ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
What is the ICD-9 procedure code for BT221ZZ?
- The CMS GEMs map BT221ZZ to ICD-9-CM 87.71 (Computerized axial tomography of kidney).