021X0AABypass Thoracic Aorta, Ascending/Arch to Innominate Artery with Autologous Arterial Tissue, Open Approach
- Billable / Specific Code
021X0AA is a billable ICD-10-PCS procedure code for Bypass Thoracic Aorta, Ascending/Arch to Innominate 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 12 MS-DRGs. 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 | 2 | Heart and Great Vessels |
| 3 | Operation | 1 | Bypass |
| 4 | BodyPart | X | Thoracic Aorta, Ascending/Arch |
| 5 | Approach | 0 | Open |
| 6 | Device | A | Autologous Arterial Tissue |
| 7 | Qualifier | A | Innominate Artery |
Code History
- 021X0AB — Bypass Thor Aorta Asc to Subclav w Autol Art, Open
Similar Procedure Codes
Questions About 021X0AA
Is 021X0AA a billable code?
Yes. 021X0AA is a complete seven-character ICD-10-PCS code, specific enough to report Bypass Thoracic Aorta, Ascending/Arch to Innominate Artery with Autologous Arterial Tissue, Open Approach on inpatient claims from October 1, 2025 through September 30, 2026.
What do the characters in 021X0AA mean?
021X0AA breaks down character by character: the 1st character 0 is the Section (Medical and Surgical); the 2nd character 2 is the Body System (Heart and Great Vessels); the 3rd character 1 is the Operation (Bypass); the 4th character X is the BodyPart (Thoracic Aorta, Ascending/Arch); the 5th character 0 is the Approach (Open); the 6th character A is the Device (Autologous Arterial Tissue); the 7th character A is the Qualifier (Innominate Artery).
What MS-DRG does 021X0AA group to?
On an inpatient stay, Bypass Thoracic Aorta, Ascending/Arch to Innominate Artery with Autologous Arterial Tissue, Open Approach maps to MS-DRGs 037, 038, 039, 270, 271, 272, 907, 908, 909, 957, 958, 959, with relative weights from 1.1755 to 7.6199. The MS-DRG sets the fixed Medicare payment for the stay.
