021W09RBypass Thoracic Aorta, Descending to Left Pulmonary Artery with Autologous Venous Tissue, Open Approach

Medical and Surgical›Heart and Great Vessels›Bypass
  • Billable / Specific Code
ICD-10-PCS 021W09R
CMS Source: FY 2026 ICD-10-PCS dataset. Effective Oct 1, 2025 – Sep 30, 2026.FacebookXLinkedInPrint

021W09R is a billable ICD-10-PCS procedure code for Bypass Thoracic Aorta, Descending to Left Pulmonary Artery with Autologous Venous 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 270, 271, 272. The root operation Bypass involves altering the route of passage of the contents of a tubular body part.

Code Identity

ICD-10-PCS Code
021W09R
Billable Status
Yes — Valid for Submission
Code Describes
Bypass Thoracic Aorta, Descending to Left Pulmonary Artery with Autologous Venous Tissue, Open Approach
Parent Code
021
Short Description
Bypass Thor Aorta Desc to L Pulm Art w Autol Vn, Open

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.

PositionDesignationValueMeaning
1Section0Medical and Surgical
2Body System2Heart and Great Vessels
3Operation1Bypass
4BodyPartWThoracic Aorta, Descending
5Approach0Open
6Device9Autologous Venous Tissue
7QualifierRPulmonary Artery, Left

Convert to ICD-9-PCS

Closest ICD-9-PCS equivalents for 021W09R under the General Equivalence Mappings.

39.0
Approximate match.

Code History

Replaced in the FY 2026 code set by:
  • 021X09R — Bypass Thor Aorta Asc to L Pulm Art w Autol Vn, Open

Similar Procedure Codes

Questions About 021W09R

Is 021W09R a billable code?

Yes. 021W09R is a complete seven-character ICD-10-PCS code, specific enough to report Bypass Thoracic Aorta, Descending to Left Pulmonary Artery with Autologous Venous Tissue, Open Approach on inpatient claims from October 1, 2025 through September 30, 2026.

What do the characters in 021W09R mean?

021W09R 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 W is the BodyPart (Thoracic Aorta, Descending); the 5th character 0 is the Approach (Open); the 6th character 9 is the Device (Autologous Venous Tissue); the 7th character R is the Qualifier (Pulmonary Artery, Left).

What MS-DRG does 021W09R group to?

On an inpatient stay, Bypass Thoracic Aorta, Descending to Left Pulmonary Artery with Autologous Venous Tissue, Open Approach maps to MS-DRGs 270, 271, 272, with relative weights from 2.5530 to 5.2763. The MS-DRG sets the fixed Medicare payment for the stay.

What is the ICD-9-PCS equivalent of 021W09R?

Under the General Equivalence Mappings, Bypass Thoracic Aorta, Descending to Left Pulmonary Artery with Autologous Venous Tissue, Open Approach crosswalks to ICD-9-PCS 39.0. The mapping is approximate, so confirm it fits the documentation.