01NG0ZZRelease Tibial Nerve, Open Approach
- Billable / Specific Code
01NG0ZZ is a billable ICD-10-PCS procedure code for Release Tibial Nerve, Open Approach. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) 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. In AHRQ's Clinical Classifications Software (CCSR), this procedure falls under Peripheral nerve decompression (excluding lumbosacral and cervicothoracic).
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 | N | Release |
| 4 | BodyPart | G | Tibial Nerve |
| 5 | Approach | 0 | Open |
| 6 | Device | Z | No Device |
| 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:
To code release of the tibial nerve, open the FY 2027 ICD-10-PCS Alphabetic Index at Release, then the subterms Nerve, Tibial. The index leads to table 01N, where the approach, device and qualifier values shown in the breakdown above complete the seven-character code 01NG0ZZ.
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.
Similar Procedure Codes
Questions About 01NG0ZZ
Is 01NG0ZZ a billable code?
Yes. This is a complete seven-character ICD-10-PCS code, specific enough to report Release Tibial Nerve, Open Approach on inpatient claims from October 1, 2026 through September 30, 2027.
What do the characters in 01NG0ZZ 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 N is the Operation (Release); the 4th character G is the BodyPart (Tibial 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 01NG0ZZ group to?
On an inpatient stay, Release Tibial Nerve, Open Approach maps to MS-DRGs 040, 041, 042, 503, 504, 505, 907, 908, 909, 957, 958, 959, with relative weights from 1.3810 to 7.5502. The MS-DRG sets the fixed Medicare payment for the stay.
What is the ICD-9-PCS equivalent of 01NG0ZZ?
Under the General Equivalence Mappings, Release Tibial Nerve, Open Approach crosswalks to ICD-9-PCS 04.44 (Release of tarsal tunnel). The mapping is approximate, so confirm it fits the documentation.
