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ICD-10-PCS 2027 procedure code

X27439BDilation of Left Pulmonary Artery with Expandable Intraluminal Device, Percutaneous Approach, New Technology Group 11

✓ Valid for 2027O.R. procedure

Short description: Dilate L Pulm Art w Expndbl Int 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 X27439B

X27439B is the ICD-10-PCS code for a dilation procedure on the left pulmonary artery using a percutaneous approach with intraluminal device, expandable (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 X27339B (right pulmonary artery), X27W39B (thoracic aorta, descending) and X27X39B (thoracic aorta, ascending/arch).

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
4Pulmonary Artery, 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
9Intraluminal Device, Expandable
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 X27439B

Is X27439B a valid ICD-10-PCS code for 2027?

Yes. X27439B is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is X27439B an O.R. procedure?

Yes. X27439B is an O.R. procedure in MS-DRG v44.0.

What DRG does X27439B group to?

Depending on the principal diagnosis, X27439B can group to MS-DRG 252, MS-DRG 253 and MS-DRG 254.