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ICD-10-PCS 2027 procedure code

05H04MZInsertion of Neurostimulator Lead into Azygos Vein, Percutaneous Endoscopic Approach

✓ Valid for 2027O.R. procedure

Short description: Insertion of Neuro Lead into 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 05H04MZ

05H04MZ is the ICD-10-PCS code for a insertion procedure on the azygos vein using a percutaneous endoscopic approach with neurostimulator lead. In ICD-10-PCS, insertion means putting in a nonbiological appliance that monitors, assists, performs, or prevents a physiological function but does not physically take the place of a body part.

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 05H34MZ (right innominate vein) and 05H44MZ (left innominate vein).

The same procedure with a different approach is coded 05H00MZ (open) and 05H03MZ (percutaneous).

With a different device, use 05H042Z (monitoring device), 05H043Z (infusion device) and 05H04DZ (intraluminal 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), DRG 042 (Peripheral, Cranial Nerve and Other Nervous System Procedures without CC/MCC), DRG 143 (Other Ear, Nose, Mouth and Throat O.R. Procedures with MCC), DRG 144 (Other Ear, Nose, Mouth and Throat O.R. Procedures with CC) and DRG 145 (Other Ear, Nose, Mouth and Throat O.R. Procedures without CC/MCC), under the surgical categories “Peripheral, Cranial Nerve and Other Nervous System Procedures”, “Other Ear, Nose, Mouth and Throat O.R. Procedures”, “Other Vascular Procedures” and 7 more.

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
HInsertion

Putting in a nonbiological appliance that monitors, assists, performs, or prevents a physiological function but does not physically take the place of a body part

Includes: Insertion of radioactive implant, insertion of central venous catheter

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

MS-DRG v44.0 grouping

All DRGs →

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

MDC 12 · Diseases and Disorders of the Male Reproductive System · Other Male Reproductive System O.R. Procedures

MDC 13 · Diseases and Disorders of the Female Reproductive System · Other Female Reproductive System O.R. Procedures

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 05H04MZ

Is 05H04MZ a valid ICD-10-PCS code for 2027?

Yes. 05H04MZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 05H04MZ an O.R. procedure?

Yes. 05H04MZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 05H04MZ group to?

Depending on the principal diagnosis, 05H04MZ can group to MS-DRG 040, MS-DRG 041, MS-DRG 042, MS-DRG 143, MS-DRG 144 and MS-DRG 145.

What is the ICD-9 procedure code for 05H04MZ?

The CMS GEMs map 05H04MZ to ICD-9-CM 04.92 (Implantation or replacement of peripheral neurostimulator lead(s)).