Skip to content
Dx

ICD-10-PCS 2027 procedure code

01HY4MZInsertion of Neurostimulator Lead into Peripheral Nerve, Percutaneous Endoscopic Approach

✓ Valid for 2027O.R. procedure

Short description: Insertion of Neuro Lead into Periph Nrv, Perc Endo 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 01HY4MZ

01HY4MZ is the ICD-10-PCS code for a insertion procedure on the peripheral nerve 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).

The same procedure with a different approach is coded 01HY0MZ (open) and 01HY3MZ (percutaneous).

With a different device, use 01HY41Z (radioactive element), 01HY42Z (monitoring device) and 01HY4YZ (other 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 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
1Peripheral Nervous System
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
YPeripheral Nerve
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
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about 01HY4MZ

Is 01HY4MZ a valid ICD-10-PCS code for 2027?

Yes. 01HY4MZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 01HY4MZ an O.R. procedure?

Yes. 01HY4MZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 01HY4MZ group to?

Depending on the principal diagnosis, 01HY4MZ 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 01HY4MZ?

The CMS GEMs map 01HY4MZ to ICD-9-CM 04.92 (Implantation or replacement of peripheral neurostimulator lead(s)).