00K90ZZMap Thalamus, Open Approach
- Billable / Specific Code
00K90ZZ is a billable ICD-10-PCS procedure code for Map Thalamus, Open Approach. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to 17 MS-DRGs. The root operation Map involves locating the route of passage of electrical impulses and/or locating functional areas in 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 | 0 | Central Nervous System and Cranial Nerves |
| 3 | Operation | K | Map |
| 4 | BodyPart | 9 | Thalamus |
| 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 00K90ZZ under the General Equivalence Mappings.
Similar Procedure Codes
Questions About 00K90ZZ
Is 00K90ZZ a billable code?
Yes. 00K90ZZ is a complete seven-character ICD-10-PCS code, specific enough to report Map Thalamus, Open Approach on inpatient claims from October 1, 2025 through September 30, 2026.
What do the characters in 00K90ZZ mean?
00K90ZZ breaks down character by character: the 1st character 0 is the Section (Medical and Surgical); the 2nd character 0 is the Body System (Central Nervous System and Cranial Nerves); the 3rd character K is the Operation (Map); the 4th character 9 is the BodyPart (Thalamus); 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 00K90ZZ group to?
On an inpatient stay, Map Thalamus, Open Approach maps to MS-DRGs 023, 024, 025, 026, 027, 820, 821, 822, 826, 827, 828, 907, 908, 909, 957, 958, 959, with relative weights from 1.2040 to 7.6199. The MS-DRG sets the fixed Medicare payment for the stay.
What is the ICD-9-PCS equivalent of 00K90ZZ?
Under the General Equivalence Mappings, Map Thalamus, Open Approach crosswalks to ICD-9-PCS 11.8. The mapping is approximate, so confirm it fits the documentation.
