CB2 Tomographic (Tomo) Nuclear Medicine Imaging - Respiratory System ICD-10-PCS
The CB2 code range contains 5 ICD-10-PCS codes for Tomographic (Tomo) Nuclear Medicine Imaging procedures on the respiratory system. 4 of the codes are billable and valid for inpatient claim submission in fiscal year 2026.
Root Operation Definition
Tomographic (Tomo) Nuclear Medicine Imaging: Introduction of radioactive materials into the body for three dimensional display of images developed from the capture of radioactive emissions.
Codes in the CB2 Range 5 codes · 4 billable
- CB2 Nuclear Medicine, Respiratory System, Tomographic (Tomo) Nuclear Medicine ImagingNon-billable header
- CB221ZZ Tomographic (Tomo) Nuclear Medicine Imaging of Lungs and Bronchi using Technetium 99m (Tc-99m)
- CB229ZZ Tomographic (Tomo) Nuclear Medicine Imaging of Lungs and Bronchi using Krypton (Kr-81m)
- CB22YZZ Tomographic (Tomo) Nuclear Medicine Imaging of Lungs and Bronchi using Other Radionuclide
- CB2YYZZ Tomographic (Tomo) Nuclear Medicine Imaging of Respiratory System using Other Radionuclide
About the CB2 Code Range
The ICD-10-PCS root operation Tomographic (Tomo) Nuclear Medicine Imaging (code CB2) involves creating cross-sectional images of a body system using radioactive substances. This procedure is classified under the Nuclear Medicine section and primarily focuses on capturing detailed internal views for diagnostic purposes.
Specifically applied to the Respiratory System, these codes describe nuclear medicine imaging performed using various radionuclides. For example, tomographic imaging of the lungs and bronchi can utilize Technetium 99m (Tc-99m) (code CB221ZZ) or Krypton (Kr-81m) (code CB229ZZ). Other codes include the use of different radionuclides for similar tomographic scans (codes CB22YZZ and CB2YYZZ). These detailed scans support the evaluation of respiratory conditions by providing precise sectional imaging through the application of nuclear medicine techniques.
Questions About This Page
How many billable codes are in the CB2 range?
Of the 5 codes in this range, 4 are billable and valid for inpatient claim submission from October 1, 2025 through September 30, 2026. Table header codes group them but cannot be reported on claims.
What does the CB2 range classify?
The range classifies Tomographic (Tomo) Nuclear Medicine Imaging procedures, introduction of radioactive materials into the body for three dimensional display of images developed from the capture of radioactive emissions, performed on the respiratory system. Each code adds the body part, approach, device, and qualifier in characters four through seven, and links to its own reference page.
Related References
Source: CMS FY 2026 ICD-10-PCS order file and code tables, effective October 1, 2025 through September 30, 2026.
