021X4ZDBypass Thoracic Aorta, Ascending/Arch to Carotid, Percutaneous Endoscopic Approach
- Billable / Specific Code
021X4ZD is a billable ICD-10-PCS procedure code for Bypass Thoracic Aorta, Ascending/Arch to Carotid, Percutaneous Endoscopic 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 | 4 | Percutaneous Endoscopic |
| 6 | Device | Z | No Device |
| 7 | Qualifier | D | Carotid |
Convert to ICD-9-PCS
Closest ICD-9-PCS equivalents for 021X4ZD under the General Equivalence Mappings.
Code History
- 021W4ZD — Bypass Thor Aorta Desc to Carotid, Perc Endo Approach
Similar Procedure Codes
Questions About 021X4ZD
Is 021X4ZD a billable code?
Yes. 021X4ZD is a complete seven-character ICD-10-PCS code, specific enough to report Bypass Thoracic Aorta, Ascending/Arch to Carotid, Percutaneous Endoscopic Approach on inpatient claims from October 1, 2025 through September 30, 2026.
What do the characters in 021X4ZD mean?
021X4ZD 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 4 is the Approach (Percutaneous Endoscopic); the 6th character Z is the Device (No Device); the 7th character D is the Qualifier (Carotid).
What MS-DRG does 021X4ZD group to?
On an inpatient stay, Bypass Thoracic Aorta, Ascending/Arch to Carotid, Percutaneous Endoscopic 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.
What is the ICD-9-PCS equivalent of 021X4ZD?
Under the General Equivalence Mappings, Bypass Thoracic Aorta, Ascending/Arch to Carotid, Percutaneous Endoscopic Approach crosswalks to ICD-9-PCS 39.22. The mapping is approximate, so confirm it fits the documentation.
