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ICD-10-PCS 2027 procedure code

051009YBypass Azygos Vein to Upper Vein with Autologous Venous Tissue, Open Approach

✓ Valid for 2027O.R. procedure

Short description: Bypass Azygos Vein to Up Vein with Autol Vn, Open Approach

Code unchanged since ICD-10-PCS took effect on October 1, 2015. Source: official FY2027 ICD-10-PCS release from CMS. Page updated September 29, 2026. About our data

About 051009Y

051009Y is the ICD-10-PCS code for a bypass procedure on the azygos vein using an open approach with autologous venous tissue (qualifier: upper vein). In ICD-10-PCS, bypass means altering the route of passage of the contents of a tubular body part.

In plain terms, this corresponds to other intrathoracic vascular shunt or bypass, the ICD-9-CM procedure title it maps to (39.23).

For a different body part, codes include 051109Y (hemiazygos vein), 051309Y (right innominate vein), 051409Y (left innominate vein), 051509Y (right subclavian vein), 051609Y (left subclavian vein), 051709Y (right axillary vein) and 18 more.

The same procedure with a different approach is coded 051049Y (percutaneous endoscopic).

With a different device, use 051007Y (autologous tissue substitute), 05100AY (autologous arterial tissue), 05100JY (synthetic substitute), 05100KY (nonautologous tissue substitute) and 05100ZY (no device).

It is an operating-room procedure in the MS-DRG logic for DRG 270 (Other Major Cardiovascular Procedures with MCC), DRG 271 (Other Major Cardiovascular Procedures with CC), DRG 272 (Other Major Cardiovascular Procedures without CC/MCC), DRG 907 (Other O.R. Procedures for Injuries with MCC), DRG 908 (Other O.R. Procedures for Injuries with CC) and DRG 909 (Other O.R. Procedures for Injuries without CC/MCC), under the surgical categories “Other Major Cardiovascular Procedures”, “Other O.R. Procedures for Injuries” and “Other O.R. Procedures for Multiple Significant Trauma”.

It has been valid since ICD-10-PCS took effect on October 1, 2015.

What each character means

1. Section
0Medical and Surgical
2. Body System
5Upper Veins
3. Operation
1Bypass

Altering the route of passage of the contents of a tubular body part

Rerouting contents of a body part to a downstream area of the normal route, to a similar route and body part, or to an abnormal route and dissimilar body part. Includes one or more anastomoses, with or without the use of a device

Includes: Coronary artery bypass, colostomy formation

4. Body Part
0Azygos Vein

Includes: Right ascending lumbar vein; Right subcostal vein

5. Approach
0Open

Cutting through the skin or mucous membrane and any other body layers necessary to expose the site of the procedure

6. Device
9Autologous Venous Tissue
7. Qualifier
YUpper Vein

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.

ICD-9-CM equivalent

Converter →
  • 39.23Other intrathoracic vascular shunt or bypassapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

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
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about 051009Y

Is 051009Y a valid ICD-10-PCS code for 2027?

Yes. 051009Y is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 051009Y an O.R. procedure?

Yes. 051009Y is an O.R. procedure in MS-DRG v44.0.

What DRG does 051009Y group to?

Depending on the principal diagnosis, 051009Y can group to MS-DRG 270, MS-DRG 271, MS-DRG 272, MS-DRG 907, MS-DRG 908 and MS-DRG 909.

What is the ICD-9 procedure code for 051009Y?

The CMS GEMs map 051009Y to ICD-9-CM 39.23 (Other intrathoracic vascular shunt or bypass).