0NT40ZZResection of Left Parietal Bone, Open Approach
- Billable / Specific Code
0NT40ZZ is a billable ICD-10-PCS procedure code for Resection of Left Parietal Bone, Open Approach. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to 20 MS-DRGs. The root operation Resection involves cutting out or off, without replacement, all 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 | N | Head and Facial Bones |
| 3 | Operation | T | Resection |
| 4 | BodyPart | 4 | Parietal Bone, Left |
| 5 | Approach | 0 | Open |
| 6 | Device | Z | No Device |
| 7 | Qualifier | Z | No Qualifier |
Convert to ICD-9-PCS
Closest ICD-9-PCS equivalents for 0NT40ZZ under the General Equivalence Mappings.
Questions About 0NT40ZZ
Is 0NT40ZZ a billable code?
Yes. 0NT40ZZ is a complete seven-character ICD-10-PCS code, specific enough to report Resection of Left Parietal Bone, Open Approach on inpatient claims from October 1, 2025 through September 30, 2026.
What do the characters in 0NT40ZZ mean?
0NT40ZZ breaks down character by character: the 1st character 0 is the Section (Medical and Surgical); the 2nd character N is the Body System (Head and Facial Bones); the 3rd character T is the Operation (Resection); the 4th character 4 is the BodyPart (Parietal Bone, Left); 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 0NT40ZZ group to?
On an inpatient stay, Resection of Left Parietal Bone, Open Approach maps to MS-DRGs 023, 024, 025, 026, 027, 143, 144, 145, 515, 516, 517, 820, 821, 822, 826, 827, 828, 907, 908, 909, with relative weights from 1.2023 to 5.8648. The MS-DRG sets the fixed Medicare payment for the stay.
What is the ICD-9-PCS equivalent of 0NT40ZZ?
Under the General Equivalence Mappings, Resection of Left Parietal Bone, Open Approach crosswalks to ICD-9-PCS 12.5. The mapping is approximate, so confirm it fits the documentation.
