01X40Z4Transfer Ulnar Nerve to Ulnar Nerve, Open Approach
- Billable / Specific Code
01X40Z4 is a billable ICD-10-PCS procedure code for Transfer Ulnar Nerve to Ulnar Nerve, Open 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 Transfer involves moving, without taking out, all or a portion of a body part to another location to take over the function of all or a portion of 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 | 1 | Peripheral Nervous System |
| 3 | Operation | X | Transfer |
| 4 | BodyPart | 4 | Ulnar Nerve |
| 5 | Approach | 0 | Open |
| 6 | Device | Z | No Device |
| 7 | Qualifier | 4 | Ulnar Nerve |
Convert to ICD-9-PCS
Closest ICD-9-PCS equivalents for 01X40Z4 under the General Equivalence Mappings.
Similar Procedure Codes
Questions About 01X40Z4
Is 01X40Z4 a billable code?
Yes. 01X40Z4 is a complete seven-character ICD-10-PCS code, specific enough to report Transfer Ulnar Nerve to Ulnar Nerve, Open Approach on inpatient claims from October 1, 2025 through September 30, 2026.
What do the characters in 01X40Z4 mean?
01X40Z4 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 X is the Operation (Transfer); the 4th character 4 is the BodyPart (Ulnar Nerve); the 5th character 0 is the Approach (Open); the 6th character Z is the Device (No Device); the 7th character 4 is the Qualifier (Ulnar Nerve).
What MS-DRG does 01X40Z4 group to?
On an inpatient stay, Transfer Ulnar Nerve to Ulnar Nerve, Open 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 01X40Z4?
Under the General Equivalence Mappings, Transfer Ulnar Nerve to Ulnar Nerve, Open Approach crosswalks to ICD-9-PCS 47.4. The mapping is approximate, so confirm it fits the documentation.
