009N40ZDrainage of Acoustic Nerve with Drainage Device, Percutaneous Endoscopic Approach
- Billable / Specific Code
009N40Z is a billable ICD-10-PCS procedure code for Drainage of Acoustic Nerve with Drainage Device, Percutaneous Endoscopic Approach. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRGs 040, 041, 042. The root operation Drainage involves taking or letting out fluids and/or gases from a body part.
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 | 9 | Drainage |
| 4 | BodyPart | N | Acoustic Nerve |
| 5 | Approach | 4 | Percutaneous Endoscopic |
| 6 | Device | 0 | Drainage Device |
| 7 | Qualifier | Z | No Qualifier |
Convert to ICD-9-PCS
Closest ICD-9-PCS equivalents for 009N40Z under the General Equivalence Mappings.
Similar Procedure Codes
Questions About 009N40Z
Is 009N40Z a billable code?
Yes. 009N40Z is a complete seven-character ICD-10-PCS code, specific enough to report Drainage of Acoustic Nerve with Drainage Device, Percutaneous Endoscopic Approach on inpatient claims from October 1, 2025 through September 30, 2026.
What do the characters in 009N40Z mean?
009N40Z 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 9 is the Operation (Drainage); the 4th character N is the BodyPart (Acoustic Nerve); the 5th character 4 is the Approach (Percutaneous Endoscopic); the 6th character 0 is the Device (Drainage Device); the 7th character Z is the Qualifier (No Qualifier).
What MS-DRG does 009N40Z group to?
On an inpatient stay, Drainage of Acoustic Nerve with Drainage Device, Percutaneous Endoscopic Approach maps to MS-DRGs 040, 041, 042, with relative weights from 1.7277 to 3.8612. The MS-DRG sets the fixed Medicare payment for the stay.
What is the ICD-9-PCS equivalent of 009N40Z?
Under the General Equivalence Mappings, Drainage of Acoustic Nerve with Drainage Device, Percutaneous Endoscopic Approach crosswalks to ICD-9-PCS 40.4. The mapping is approximate, so confirm it fits the documentation.
