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ICD-10-PCS 2027 procedure code

X27635BDilation of Left Subclavian Vein with Cell Impermeable Intraluminal Device, Percutaneous Approach, New Technology Group 11

✓ Valid for 2027O.R. procedure

Short description: Dilate L Subclav Vn w Cel Impermabl Dev, Perc, New Tech 11

Code last changed in FY2026 (effective October 1, 2025). Source: official FY2027 ICD-10-PCS release from CMS. Page updated September 29, 2026. About our data

About X27635B

X27635B is the ICD-10-PCS code for a dilation procedure on the left subclavian vein using a percutaneous approach with intraluminal device, cell impermeable (qualifier: new technology group 11). In ICD-10-PCS, dilation means expanding an orifice or the lumen of a tubular body part.

For a different body part, codes include X27535B (right subclavian vein), X27735B (right axillary vein), X27835B (left axillary vein), X27935B (right brachial vein), X27A35B (left brachial vein), X27B35B (right basilic vein) and 3 more.

It is an operating-room procedure in the MS-DRG logic for DRG 252 (Other Vascular Procedures with MCC), DRG 253 (Other Vascular Procedures with CC) and DRG 254 (Other Vascular Procedures without CC/MCC), under the surgical category “Other Vascular Procedures”.

It was added in FY2026, effective October 1, 2025.

What each character means

1. Section
XNew Technology
2. Body System
2Cardiovascular System
3. Operation
7Dilation

Expanding an orifice or the lumen of a tubular body part

The orifice can be a natural orifice or an artificially created orifice. Accomplished by stretching a tubular body part using intraluminal pressure or by cutting part of the orifice or wall of the tubular body part

4. Body Part
6Subclavian Vein, Left
5. Approach
3Percutaneous

Entry, by puncture or minor incision, of instrumentation through the skin or mucous membrane and any other body layers necessary to reach the site of the procedure

6. Device / Substance / Technology
5Intraluminal Device, Cell Impermeable
7. Qualifier
BNew Technology Group 11

Other versions of this procedure

MS-DRG v44.0 grouping

All DRGs →

Surgical MS-DRGs this procedure can group to, depending on the principal diagnosis's MDC.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2026 (effective 10/1/2025): Added
  • No changes since FY2026.

Common questions about X27635B

Is X27635B a valid ICD-10-PCS code for 2027?

Yes. X27635B is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is X27635B an O.R. procedure?

Yes. X27635B is an O.R. procedure in MS-DRG v44.0.

What DRG does X27635B group to?

Depending on the principal diagnosis, X27635B can group to MS-DRG 252, MS-DRG 253 and MS-DRG 254.