09T90ZZResection of Right Auditory Ossicle, Open Approach
- Billable / Specific Code
09T90ZZ is a billable ICD-10-PCS procedure code for Resection of Right Auditory Ossicle, Open Approach. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRGs 143, 144, 145. The root operation Resection involves cutting out or off, without replacement, all of a body part. In AHRQ's Clinical Classifications Software (CCSR), this procedure falls under ENT excision (excluding nasal passage, sinuses, tongue, salivary glands, larynx).
Code Identity
PCS Table Breakdown
Each ICD-10-PCS code is built from seven characters, each an axis of the procedure. Hover or tap the icons for the official CMS definitions.
| Position | Designation | Value | Meaning |
|---|---|---|---|
| 1 | Section | 0 | Medical and Surgical |
| 2 | Body System | 9 | Ear, Nose, Sinus |
| 3 | Operation | T | Resection |
| 4 | BodyPart | 9 | Auditory Ossicle, Right |
| 5 | Approach | 0 | Open |
| 6 | Device | Z | No Device |
| 7 | Qualifier | Z | No Qualifier |
In the ICD-10-PCS Alphabetic Index
These FY 2027 ICD-10-PCS Alphabetic Index entries lead to this code:
To code resection of the right auditory ossicle, open the FY 2027 ICD-10-PCS Alphabetic Index at Resection, then the subterms Auditory Ossicle, Right. The index leads to table 09T, where the approach, device and qualifier values shown in the breakdown above complete the seven-character code 09T90ZZ.
Clinical Classification (CCSR)
AHRQ groups this procedure code into these clinical categories.
Convert to ICD-9-PCS
Closest ICD-9-PCS equivalents for this code under the General Equivalence Mappings.
Code History
- 09T98ZZ — Resection of Right Auditory Ossicle, Endo
Similar Procedure Codes
Questions About 09T90ZZ
Is 09T90ZZ a billable code?
Yes. This is a complete seven-character ICD-10-PCS code, specific enough to report Resection of Right Auditory Ossicle, Open Approach on inpatient claims from October 1, 2026 through September 30, 2027.
What do the characters in 09T90ZZ mean?
The code breaks down character by character: the 1st character 0 is the Section (Medical and Surgical); the 2nd character 9 is the Body System (Ear, Nose, Sinus); the 3rd character T is the Operation (Resection); the 4th character 9 is the BodyPart (Auditory Ossicle, Right); the 5th character 0 is the Approach (Open); the 6th character Z is the Device (No Device); the 7th character Z is the Qualifier (No Qualifier).
What MS-DRG does 09T90ZZ group to?
On an inpatient stay, Resection of Right Auditory Ossicle, Open Approach maps to MS-DRGs 143, 144, 145, with relative weights from 1.2335 to 3.8500. The MS-DRG sets the fixed Medicare payment for the stay.
What is the ICD-9-PCS equivalent of 09T90ZZ?
Under the General Equivalence Mappings, Resection of Right Auditory Ossicle, Open Approach crosswalks to ICD-9-PCS 19.19 (Other stapedectomy) and 19.3 (Other operations on ossicular chain). The mapping is approximate, so confirm it fits the documentation.
