Ear, Nose, Mouth and Throat (C9) ICD-10-PCS
The C9 body system covers Nuclear Medicine procedures on ear, nose, mouth and throat, with 4 ICD-10-PCS codes across 1 root operations, 3 of them billable in fiscal year 2027. Each root operation defines a distinct procedural objective, and the info icons show the official definition with a preview of the codes inside.
Root Operations in This Body System 1 operations · 4 codes
| Chars 1–3 | Root Operation | Codes | Billable |
|---|---|---|---|
| C91 | Planar Nuclear Medicine ImagingIntroduction of radioactive materials into the body for single plane display of images developed from the capture of radioactive emissions | 4 | 3 |
The info icon shows the official root operation definition and previews the codes in that range.
About the C9 Body System
These codes cover nuclear medicine imaging of both salivary glands or a broader group of sites.
In planar imaging, radioactive material enters the body, and its captured emissions produce an image displayed in a single plane. The body-part character distinguishes Salivary Glands, Bilateral from Ear, Nose, Mouth and Throat.
Questions About This Page
How many codes are in the C9 body system?
The C9 body system contains 4 ICD-10-PCS codes in FY 2027, organized into 1 root operations. 3 of them are billable on inpatient claims.
What is a root operation?
The root operation is the third character of every ICD-10-PCS code and names the objective of the procedure. Drainage takes fluid out, Excision cuts out a portion of a body part, and Resection removes all of one. Picking the right root operation is the central skill of PCS coding, so each one above carries its official CMS definition.
Related References
Source: CMS FY 2027 ICD-10-PCS order file and code tables, effective October 1, 2026 through September 30, 2027.
