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

New Technology›Cardiovascular System›Dilation
  • Billable / Specific Code
ICD-10-PCS X27W39B
CMS Source: FY 2027 ICD-10-PCS dataset. Effective Oct 1, 2026 – Sep 30, 2027.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 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRGs 252, 253, 254. The root operation Dilation involves expanding an orifice or the lumen of a tubular body part. In AHRQ's Clinical Classifications Software (CCSR), this procedure falls under Angioplasty and related vessel procedures (endovascular; excluding carotid).

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
Short Description
Dilate Thor Aort w Expndbl Int Dev, Perc, New Tech 11
Parent Code
X27

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

In the ICD-10-PCS Alphabetic Index

These FY 2027 ICD-10-PCS Alphabetic Index entries lead to this code:

Dilation, Aorta, Thoracic, Descending, Expandable Intraluminal Device
Direct entry for this code
New Technology, Dilation, Aorta, Descending, Expandable Intraluminal Device
Direct entry for this code

Browse the full ICD-10-PCS Alphabetic Index →

Clinical Classification (CCSR)

AHRQ groups this procedure code into these clinical categories.

CAR008
Angioplasty and related vessel procedures (endovascular; excluding carotid)
Clinical domain: Cardiovascular Procedures

Code History

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. This 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, 2026 through September 30, 2027.

What do the characters in X27W39B mean?

The code 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 1.7961 to 3.4822. The MS-DRG sets the fixed Medicare payment for the stay.