00NN0ZZRelease Acoustic Nerve, Open Approach
- Billable / Specific Code
00NN0ZZ is a billable ICD-10-PCS procedure code for Release Acoustic Nerve, Open Approach. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to 12 MS-DRGs. 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 | 0 | Central Nervous System and Cranial Nerves |
| 3 | Operation | N | Release |
| 4 | BodyPart | N | Acoustic Nerve |
| 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 00NN0ZZ under the General Equivalence Mappings.
Similar Procedure Codes
Questions About 00NN0ZZ
Is 00NN0ZZ a billable code?
Yes. 00NN0ZZ is a complete seven-character ICD-10-PCS code, specific enough to report Release Acoustic Nerve, Open Approach on inpatient claims from October 1, 2025 through September 30, 2026.
What do the characters in 00NN0ZZ mean?
00NN0ZZ breaks down character by character: the 1st character 0 is the Section (Medical and Surgical); the 2nd character 0 is the Body System (Central Nervous System and Cranial Nerves); the 3rd character N is the Operation (Release); the 4th character N is the BodyPart (Acoustic Nerve); 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 00NN0ZZ group to?
On an inpatient stay, Release Acoustic Nerve, Open Approach maps to MS-DRGs 040, 041, 042, 143, 144, 145, 907, 908, 909, 957, 958, 959, with relative weights from 1.2023 to 7.6199. The MS-DRG sets the fixed Medicare payment for the stay.
What is the ICD-9-PCS equivalent of 00NN0ZZ?
Under the General Equivalence Mappings, Release Acoustic Nerve, Open Approach crosswalks to ICD-9-PCS 44.2. The mapping is approximate, so confirm it fits the documentation.
