X27W39BDilation of Thoracic Aorta, Descending with Expandable Intraluminal Device, Percutaneous Approach, New Technology Group 11

New Technology›Cardiovascular System›Dilation
ICD-10-PCS X27W39B
CMS Source: FY 2026 ICD-10-PCS dataset. Effective Oct 1, 2025 – Sep 30, 2026.FacebookXLinkedInPrint

X27W39B is a billable ICD-10-PCS procedure code for Dilation of Thoracic Aorta, Descending with Expandable Intraluminal Device, Percutaneous Approach, New Technology Group 11. 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
X27W39B
Billable Status
Yes — Valid for Submission
Code Describes
Dilation of Thoracic Aorta, Descending with Expandable Intraluminal Device, Percutaneous Approach, New Technology Group 11
Parent Code
X27
Short Description
Dilate Thor Aort w Expndbl Int Dev, Perc, New Tech 11

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
1SectionXNew Technology
2Body System2Cardiovascular System
3Operation7Dilation
4BodyPartWThoracic Aorta, Descending
5Approach3Percutaneous
6Device/Substance/Technology9Intraluminal Device, Expandable
7QualifierBNew Technology Group 11

Code History

FY 2026New code, effective October 1, 2025.
Replaces previously assigned code(s):
  • 027W3DZ — Dilation of Thor Aorta Desc with Intralum Dev, Perc Approach

Questions About X27W39B

Is X27W39B a billable code?

Yes. X27W39B is a complete seven-character ICD-10-PCS code, specific enough to report Dilation of Thoracic Aorta, Descending with Expandable Intraluminal Device, Percutaneous Approach, New Technology Group 11 on inpatient claims from October 1, 2025 through September 30, 2026.

What do the characters in X27W39B mean?

X27W39B breaks down character by character: the 1st character X is the Section (New Technology); the 2nd character 2 is the Body System (Cardiovascular System); 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 9 is the Device/Substance/Technology (Intraluminal Device, Expandable); the 7th character B is the Qualifier (New Technology Group 11).

What MS-DRG does X27W39B group to?

On an inpatient stay, Dilation of Thoracic Aorta, Descending with Expandable Intraluminal Device, Percutaneous Approach, New Technology Group 11 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.