021L4Z5Bypass Left Ventricle to Coronary Circulation, Percutaneous Endoscopic Approach
- Billable / Specific Code
021L4Z5 is a billable ICD-10-PCS procedure code for Bypass Left Ventricle to Coronary Circulation, Percutaneous Endoscopic Approach. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRGs 228, 229. 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 | L | Ventricle, Left |
| 5 | Approach | 4 | Percutaneous Endoscopic |
| 6 | Device | Z | No Device |
| 7 | Qualifier | 5 | Coronary Circulation |
Convert to ICD-9-PCS
Closest ICD-9-PCS equivalents for 021L4Z5 under the General Equivalence Mappings.
Similar Procedure Codes
Questions About 021L4Z5
Is 021L4Z5 a billable code?
Yes. 021L4Z5 is a complete seven-character ICD-10-PCS code, specific enough to report Bypass Left Ventricle to Coronary Circulation, Percutaneous Endoscopic Approach on inpatient claims from October 1, 2025 through September 30, 2026.
What do the characters in 021L4Z5 mean?
021L4Z5 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 L is the BodyPart (Ventricle, Left); the 5th character 4 is the Approach (Percutaneous Endoscopic); the 6th character Z is the Device (No Device); the 7th character 5 is the Qualifier (Coronary Circulation).
What MS-DRG does 021L4Z5 group to?
On an inpatient stay, Bypass Left Ventricle to Coronary Circulation, Percutaneous Endoscopic Approach maps to MS-DRGs 228, 229, with relative weights from 3.1495 to 4.9474. The MS-DRG sets the fixed Medicare payment for the stay.
What is the ICD-9-PCS equivalent of 021L4Z5?
Under the General Equivalence Mappings, Bypass Left Ventricle to Coronary Circulation, Percutaneous Endoscopic Approach crosswalks to ICD-9-PCS 36.32. The mapping is approximate, so confirm it fits the documentation.
