01WY4MZRevision of Neurostimulator Lead in Peripheral Nerve, Percutaneous Endoscopic Approach
- Billable / Specific Code
01WY4MZ is a billable ICD-10-PCS procedure code for Revision of Neurostimulator Lead in Peripheral Nerve, Percutaneous Endoscopic Approach. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRGs 040, 041, 042. The root operation Revision involves correcting, to the extent possible, a portion of a malfunctioning device or the position of a displaced device. In AHRQ's Clinical Classifications Software (CCSR), this procedure falls under Peripheral nerve procedures, NEC.
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 | 1 | Peripheral Nervous System |
| 3 | Operation | W | Revision |
| 4 | BodyPart | Y | Peripheral Nerve |
| 5 | Approach | 4 | Percutaneous Endoscopic |
| 6 | Device | M | Neurostimulator Lead |
| 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:
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
Similar Procedure Codes
Questions About 01WY4MZ
Is 01WY4MZ a billable code?
Yes. This is a complete seven-character ICD-10-PCS code, specific enough to report Revision of Neurostimulator Lead in Peripheral Nerve, Percutaneous Endoscopic Approach on inpatient claims from October 1, 2026 through September 30, 2027.
What do the characters in 01WY4MZ mean?
The code breaks down character by character: the 1st character 0 is the Section (Medical and Surgical); the 2nd character 1 is the Body System (Peripheral Nervous System); the 3rd character W is the Operation (Revision); the 4th character Y is the BodyPart (Peripheral Nerve); the 5th character 4 is the Approach (Percutaneous Endoscopic); the 6th character M is the Device (Neurostimulator Lead); the 7th character Z is the Qualifier (No Qualifier).
What MS-DRG does 01WY4MZ group to?
On an inpatient stay, Revision of Neurostimulator Lead in Peripheral Nerve, Percutaneous Endoscopic Approach maps to MS-DRGs 040, 041, 042, with relative weights from 1.6757 to 3.7168. The MS-DRG sets the fixed Medicare payment for the stay.
What is the ICD-9-PCS equivalent of 01WY4MZ?
Under the General Equivalence Mappings, Revision of Neurostimulator Lead in Peripheral Nerve, Percutaneous Endoscopic Approach crosswalks to ICD-9-PCS 04.04 (Other incision of cranial and peripheral nerves) and 05.89 (Other operations on sympathetic nerves or ganglia). The mapping is approximate, so confirm it fits the documentation.
