03120AYBypass Innominate Artery to Upper Artery with Autologous Arterial Tissue, Open Approach
- Billable / Specific Code
- New for FY 2026
03120AY is a billable ICD-10-PCS procedure code for Bypass Innominate Artery to Upper Artery with Autologous Arterial Tissue, Open Approach. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRGs 252, 253, 254. The root operation Bypass involves altering the route of passage of the contents of a tubular 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 | 3 | Upper Arteries |
| 3 | Operation | 1 | Bypass |
| 4 | BodyPart | 2 | Innominate Artery |
| 5 | Approach | 0 | Open |
| 6 | Device | A | Autologous Arterial Tissue |
| 7 | Qualifier | Y | Upper Artery |
Code History
- 03Q20ZZ — Repair Innominate Artery, Open Approach
Similar Procedure Codes
Questions About 03120AY
Is 03120AY a billable code?
Yes. 03120AY is a complete seven-character ICD-10-PCS code, specific enough to report Bypass Innominate Artery to Upper Artery with Autologous Arterial Tissue, Open Approach on inpatient claims from October 1, 2025 through September 30, 2026.
What do the characters in 03120AY mean?
03120AY breaks down character by character: the 1st character 0 is the Section (Medical and Surgical); the 2nd character 3 is the Body System (Upper Arteries); the 3rd character 1 is the Operation (Bypass); the 4th character 2 is the BodyPart (Innominate Artery); the 5th character 0 is the Approach (Open); the 6th character A is the Device (Autologous Arterial Tissue); the 7th character Y is the Qualifier (Upper Artery).
What MS-DRG does 03120AY group to?
On an inpatient stay, Bypass Innominate Artery to Upper Artery with Autologous Arterial Tissue, Open Approach maps to MS-DRGs 252, 253, 254, with relative weights from 1.7817 to 3.4883. The MS-DRG sets the fixed Medicare payment for the stay.
