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ICD-10-PCS 2027 procedure code

05W04MZRevision of Neurostimulator Lead in Azygos Vein, Percutaneous Endoscopic Approach

✓ Valid for 2027O.R. procedure

Short description: Revision of Neuro Lead in Azygos Vein, Perc Endo Approach

Code last changed in FY2017 (effective October 1, 2016). Source: official FY2027 ICD-10-PCS release from CMS. Page updated September 29, 2026. About our data

About 05W04MZ

05W04MZ is the ICD-10-PCS code for a revision procedure on the azygos vein using a percutaneous endoscopic approach with neurostimulator lead. In ICD-10-PCS, revision means correcting, to the extent possible, a portion of a malfunctioning device or the position of a displaced device.

In plain terms, this corresponds to implantation or replacement of peripheral neurostimulator lead(s), the ICD-9-CM procedure title it maps to (04.92).

For a different body part, codes include 05W34MZ (right innominate vein) and 05W44MZ (left innominate vein).

The same procedure with a different approach is coded 05W00MZ (open), 05W03MZ (percutaneous) and 05W0XMZ (external).

With a different device, use 05W042Z (monitoring device).

It is an operating-room procedure in the MS-DRG logic for DRG 040 (Peripheral, Cranial Nerve and Other Nervous System Procedures with MCC), DRG 041 (Peripheral, Cranial Nerve and Other Nervous System Procedures with CC or Peripheral Neurostimulator) and DRG 042 (Peripheral, Cranial Nerve and Other Nervous System Procedures without CC/MCC), under the surgical category “Peripheral, Cranial Nerve and Other Nervous System Procedures”.

It was added in FY2017, effective October 1, 2016.

What each character means

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

Correcting, to the extent possible, a portion of a malfunctioning device or the position of a displaced device

Revision can include correcting a malfunctioning or displaced device by taking out or putting in components of the device such as a screw or pin

Includes: Adjustment of position of pacemaker lead, recementing of hip prosthesis

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
MNeurostimulator Lead
7. Qualifier
ZNo Qualifier

Other versions of this procedure

Different device

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 →
  • 04.92Implantation or replacement of peripheral neurostimulator lead(s)approximate

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
  • FY2017 (effective 10/1/2016): Added
  • No changes since FY2017.

Common questions about 05W04MZ

Is 05W04MZ a valid ICD-10-PCS code for 2027?

Yes. 05W04MZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 05W04MZ an O.R. procedure?

Yes. 05W04MZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 05W04MZ group to?

Depending on the principal diagnosis, 05W04MZ can group to MS-DRG 040, MS-DRG 041 and MS-DRG 042.

What is the ICD-9 procedure code for 05W04MZ?

The CMS GEMs map 05W04MZ to ICD-9-CM 04.92 (Implantation or replacement of peripheral neurostimulator lead(s)).