C91 Planar Nuclear Medicine Imaging - Ear, Nose, Mouth and Throat ICD-10-PCS
The C91 code range contains 4 ICD-10-PCS codes for Planar Nuclear Medicine Imaging procedures on the ear, nose, mouth and throat. 3 of the codes are billable and valid for inpatient claim submission in fiscal year 2027.
Root Operation Definition
Planar Nuclear Medicine Imaging: Introduction of radioactive materials into the body for single plane display of images developed from the capture of radioactive emissions.
Codes in the C91 Range 4 codes · 3 billable
- C91 Nuclear Medicine, Ear, Nose, Mouth and Throat, Planar Nuclear Medicine ImagingNon-billable header
- C91B1ZZ Planar Nuclear Medicine Imaging of Bilateral Salivary Glands using Technetium 99m (Tc-99m)
- C91BYZZ Planar Nuclear Medicine Imaging of Bilateral Salivary Glands using Other Radionuclide
- C91YYZZ Planar Nuclear Medicine Imaging of Ear, Nose, Mouth and Throat using Other Radionuclide
About the C91 Code Range
These procedures introduce radioactive material into the body and capture its emissions to create images displayed in a single plane. They image both salivary glands or the ear, nose, mouth and throat.
The fourth character identifies the body part: both salivary glands or the ear, nose, mouth and throat. The fifth identifies the radioactive material as Technetium 99m (Tc-99m) or Other Radionuclide. The sixth and seventh characters both use None for their qualifiers.
Questions About This Page
How many billable codes are in the C91 range?
Of the 4 codes in this range, 3 are billable and valid for inpatient claim submission from October 1, 2026 through September 30, 2027. Table header codes group them but cannot be reported on claims.
What does the C91 range classify?
The range classifies Planar Nuclear Medicine Imaging procedures, introduction of radioactive materials into the body for single plane display of images developed from the capture of radioactive emissions, performed on the ear, nose, mouth and throat. 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 2027 ICD-10-PCS order file and code tables, effective October 1, 2026 through September 30, 2027.
