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ICD-10-PCS 2027 procedure code

05904ZXDrainage of Azygos Vein, Percutaneous Endoscopic Approach, Diagnostic

✓ Valid for 2027O.R. procedure

Short description: Drainage of Azygos Vein, Perc Endo Approach, Diagn

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 05904ZX

05904ZX is the ICD-10-PCS code for a drainage procedure on the azygos vein using a percutaneous endoscopic approach (qualifier: diagnostic). In ICD-10-PCS, drainage means taking or letting out fluids and/or gases from a body part.

In plain terms, this corresponds to biopsy of blood vessel, the ICD-9-CM procedure title it maps to (38.21).

For a different body part, codes include 05914ZX (hemiazygos vein), 05934ZX (right innominate vein), 05944ZX (left innominate vein), 05954ZX (right subclavian vein), 05964ZX (left subclavian vein), 05974ZX (right axillary vein) and 19 more.

The same procedure with a different approach is coded 05900ZX (open) and 05903ZX (percutaneous).

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 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
9Drainage

Taking or letting out fluids and/or gases from a body part

The qualifier DIAGNOSTIC is used to identify drainage procedures that are biopsies

Includes: Thoracentesis, incision and drainage

4. Body Part
0Azygos Vein

Includes: Right ascending lumbar vein; Right subcostal vein

5. Approach
4Percutaneous Endoscopic

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

6. Device
ZNo Device
7. Qualifier
XDiagnostic

Other versions of this procedure

Different qualifier

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 →
  • 38.21Biopsy of blood vesselapproximate

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 05904ZX

Is 05904ZX a valid ICD-10-PCS code for 2027?

Yes. 05904ZX is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 05904ZX an O.R. procedure?

Yes. 05904ZX is an O.R. procedure in MS-DRG v44.0.

What DRG does 05904ZX group to?

Depending on the principal diagnosis, 05904ZX can group to MS-DRG 252, MS-DRG 253 and MS-DRG 254.

What is the ICD-9 procedure code for 05904ZX?

The CMS GEMs map 05904ZX to ICD-9-CM 38.21 (Biopsy of blood vessel).