Ear, Nose, Sinus (X9) ICD-10-PCS
The X9 body system covers New Technology procedures on ear, nose, sinus, 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 |
|---|---|---|---|
| X9H | InsertionPutting in a nonbiological appliance that monitors, assists, performs, or prevents a physiological function but does not physically take the place of a body part | 4 | 3 |
The info icon shows the official root operation definition and previews the codes in that range.
About the X9 Body System
These Ear, Nose, Sinus codes cover placing an appliance in the inner ear.
The Insertion table describes a nonbiological appliance that monitors, assists, performs, or prevents a body function without replacing a body part. The body-part character distinguishes the right inner ear, left inner ear, and both inner ears.
FY 2027 changes: The FY 2027 ICD-10-PCS update, effective October 1, 2026, added 3 codes in this body system. Table with changes: X9H Insertion.
Questions About This Page
How many codes are in the X9 body system?
The X9 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.
