0NH504ZInsertion of Internal Fixation Device into Right Temporal Bone, Open Approach
- Billable / Specific Code
0NH504Z is a billable ICD-10-PCS procedure code for Insertion of Internal Fixation Device into Right Temporal Bone, Open Approach. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to 14 MS-DRGs. The root operation Insertion involves putting in a nonbiological appliance that monitors, assists, performs, or prevents a physiological function but does not physically take the place 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 | H | Insertion |
| 4 | BodyPart | 5 | Temporal Bone, Right |
| 5 | Approach | 0 | Open |
| 6 | Device | 4 | Internal Fixation Device |
| 7 | Qualifier | Z | No Qualifier |
Convert to ICD-9-PCS
Closest ICD-9-PCS equivalents for 0NH504Z under the General Equivalence Mappings.
Similar Procedure Codes
Questions About 0NH504Z
Is 0NH504Z a billable code?
Yes. 0NH504Z is a complete seven-character ICD-10-PCS code, specific enough to report Insertion of Internal Fixation Device into Right Temporal Bone, Open Approach on inpatient claims from October 1, 2025 through September 30, 2026.
What do the characters in 0NH504Z mean?
0NH504Z 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 H is the Operation (Insertion); the 4th character 5 is the BodyPart (Temporal Bone, Right); the 5th character 0 is the Approach (Open); the 6th character 4 is the Device (Internal Fixation Device); the 7th character Z is the Qualifier (No Qualifier).
What MS-DRG does 0NH504Z group to?
On an inpatient stay, Insertion of Internal Fixation Device into Right Temporal Bone, Open Approach maps to MS-DRGs 023, 024, 025, 026, 027, 143, 144, 145, 515, 516, 517, 907, 908, 909, with relative weights from 1.2023 to 5.7303. The MS-DRG sets the fixed Medicare payment for the stay.
What is the ICD-9-PCS equivalent of 0NH504Z?
Under the General Equivalence Mappings, Insertion of Internal Fixation Device into Right Temporal Bone, Open Approach crosswalks to ICD-9-PCS 20.6. The mapping is approximate, so confirm it fits the documentation.
