09NB0ZZRelease Right Mastoid Sinus, Open Approach
- Billable / Specific Code
09NB0ZZ is a billable ICD-10-PCS procedure code for Release Right Mastoid Sinus, Open Approach. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRGs 143, 144, 145. The root operation Release involves freeing a body part from an abnormal physical constraint by cutting or by the use of force.
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 | N | Release |
| 4 | BodyPart | B | Mastoid Sinus, Right |
| 5 | Approach | 0 | Open |
| 6 | Device | Z | No Device |
| 7 | Qualifier | Z | No Qualifier |
Convert to ICD-9-PCS
Closest ICD-9-PCS equivalents for 09NB0ZZ under the General Equivalence Mappings.
Similar Procedure Codes
Questions About 09NB0ZZ
Is 09NB0ZZ a billable code?
Yes. 09NB0ZZ is a complete seven-character ICD-10-PCS code, specific enough to report Release Right Mastoid Sinus, Open Approach on inpatient claims from October 1, 2025 through September 30, 2026.
What do the characters in 09NB0ZZ mean?
09NB0ZZ 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 N is the Operation (Release); the 4th character B is the BodyPart (Mastoid Sinus, 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 09NB0ZZ group to?
On an inpatient stay, Release Right Mastoid Sinus, Open Approach maps to MS-DRGs 143, 144, 145, with relative weights from 1.2023 to 3.7466. The MS-DRG sets the fixed Medicare payment for the stay.
What is the ICD-9-PCS equivalent of 09NB0ZZ?
Under the General Equivalence Mappings, Release Right Mastoid Sinus, Open Approach crosswalks to ICD-9-PCS 20.99. The mapping is approximate, so confirm it fits the documentation.
