01S20ZZReposition Phrenic Nerve, Open Approach
- Billable / Specific Code
01S20ZZ is a billable ICD-10-PCS procedure code for Reposition Phrenic Nerve, Open Approach. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to 6 MS-DRGs. The root operation Reposition involves moving to its normal location, or other suitable location, all or a portion of a body part. 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 | S | Reposition |
| 4 | BodyPart | 2 | Phrenic 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 reposition of the phrenic nerve, open the FY 2027 ICD-10-PCS Alphabetic Index at Reposition, then the subterms Nerve, Phrenic. The index leads to table 01S, where the approach, device and qualifier values shown in the breakdown above complete the seven-character code 01S20ZZ.
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 01S20ZZ
Is 01S20ZZ a billable code?
Yes. This is a complete seven-character ICD-10-PCS code, specific enough to report Reposition Phrenic Nerve, Open Approach on inpatient claims from October 1, 2026 through September 30, 2027.
What do the characters in 01S20ZZ 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 S is the Operation (Reposition); the 4th character 2 is the BodyPart (Phrenic 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 01S20ZZ group to?
On an inpatient stay, Reposition Phrenic Nerve, Open Approach maps to MS-DRGs 040, 041, 042, 957, 958, 959, with relative weights from 1.6757 to 7.5502. The MS-DRG sets the fixed Medicare payment for the stay.
What is the ICD-9-PCS equivalent of 01S20ZZ?
Under the General Equivalence Mappings, Reposition Phrenic Nerve, Open Approach crosswalks to ICD-9-PCS 04.6 (Transposition of cranial and peripheral nerves). The mapping is approximate, so confirm it fits the documentation.
