027W3ZZDilation of Thoracic Aorta, Descending, Percutaneous Approach

Medical and Surgical›Heart and Great Vessels›Dilation
  • Billable / Specific Code
ICD-10-PCS 027W3ZZ
CMS Source: FY 2026 ICD-10-PCS dataset. Effective Oct 1, 2025 – Sep 30, 2026.FacebookXLinkedInPrint

027W3ZZ is a billable ICD-10-PCS procedure code for Dilation of Thoracic Aorta, Descending, Percutaneous Approach. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRGs 252, 253, 254. The root operation Dilation involves expanding an orifice or the lumen of a tubular body part.

Code Identity

ICD-10-PCS Code
027W3ZZ
Billable Status
Yes — Valid for Submission
Code Describes
Dilation of Thoracic Aorta, Descending, Percutaneous Approach
Parent Code
027
Short Description
Dilation of Thoracic Aorta, Descending, Perc Approach

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
3Operation7Dilation
4BodyPartWThoracic Aorta, Descending
5Approach3Percutaneous
6DeviceZNo Device
7QualifierZNo Qualifier

Convert to ICD-9-PCS

Closest ICD-9-PCS equivalents for 027W3ZZ under the General Equivalence Mappings.

39.50
Approximate match; combination (more than one code may be needed).
40
Approximate match; combination (more than one code may be needed).

Code History

Replaced in the FY 2026 code set by:
  • 027X3ZZ — Dilation of Thoracic Aorta, Ascending/Arch, Perc Approach

Similar Procedure Codes

Questions About 027W3ZZ

Is 027W3ZZ a billable code?

Yes. 027W3ZZ is a complete seven-character ICD-10-PCS code, specific enough to report Dilation of Thoracic Aorta, Descending, Percutaneous Approach on inpatient claims from October 1, 2025 through September 30, 2026.

What do the characters in 027W3ZZ mean?

027W3ZZ 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 7 is the Operation (Dilation); the 4th character W is the BodyPart (Thoracic Aorta, Descending); the 5th character 3 is the Approach (Percutaneous); the 6th character Z is the Device (No Device); the 7th character Z is the Qualifier (No Qualifier).

What MS-DRG does 027W3ZZ group to?

On an inpatient stay, Dilation of Thoracic Aorta, Descending, Percutaneous Approach maps to MS-DRGs 252, 253, 254, with relative weights from 1.7817 to 3.4883. The MS-DRG sets the fixed Medicare payment for the stay.

What is the ICD-9-PCS equivalent of 027W3ZZ?

Under the General Equivalence Mappings, Dilation of Thoracic Aorta, Descending, Percutaneous Approach crosswalks to ICD-9-PCS 39.50 and 40. The mapping is approximate, so confirm it fits the documentation.