02120J9Bypass Coronary Artery, Three Arteries from Left Internal Mammary with Synthetic Substitute, Open Approach
- Billable / Specific Code
02120J9 is a billable ICD-10-PCS procedure code for Bypass Coronary Artery, Three Arteries from Left Internal Mammary with Synthetic Substitute, Open Approach. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to 7 MS-DRGs. The root operation Bypass involves altering the route of passage of the contents of a tubular body part. In AHRQ's Clinical Classifications Software (CCSR), this procedure falls under Coronary artery bypass grafts (CABG).
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 | 2 | Coronary Artery, Three Arteries |
| 5 | Approach | 0 | Open |
| 6 | Device | J | Synthetic Substitute |
| 7 | Qualifier | 9 | Internal Mammary, Left |
In the ICD-10-PCS Alphabetic Index
These FY 2027 ICD-10-PCS Alphabetic Index entries lead to this code:
Clinical Classification (CCSR)
AHRQ groups this procedure code into these clinical categories.
Convert to ICD-9-PCS
Closest ICD-9-PCS equivalents for this code under the General Equivalence Mappings.
Similar Procedure Codes
Questions About 02120J9
Is 02120J9 a billable code?
Yes. This is a complete seven-character ICD-10-PCS code, specific enough to report Bypass Coronary Artery, Three Arteries from Left Internal Mammary with Synthetic Substitute, Open Approach on inpatient claims from October 1, 2026 through September 30, 2027.
What do the characters in 02120J9 mean?
The code 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 2 is the BodyPart (Coronary Artery, Three Arteries); the 5th character 0 is the Approach (Open); the 6th character J is the Device (Synthetic Substitute); the 7th character 9 is the Qualifier (Internal Mammary, Left).
What MS-DRG does 02120J9 group to?
On an inpatient stay, Bypass Coronary Artery, Three Arteries from Left Internal Mammary with Synthetic Substitute, Open Approach maps to MS-DRGs 212, 231, 232, 233, 234, 235, 236, with relative weights from 4.3377 to 11.4416. The MS-DRG sets the fixed Medicare payment for the stay.
What is the ICD-9-PCS equivalent of 02120J9?
Under the General Equivalence Mappings, Bypass Coronary Artery, Three Arteries from Left Internal Mammary with Synthetic Substitute, Open Approach crosswalks to ICD-9-PCS 36.16 (Double internal mammary-coronary artery bypass). The mapping is approximate, so confirm it fits the documentation.
