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ICD-10-PCS 2027 procedure code

00HE4MZInsertion of Neurostimulator Lead into Cranial Nerve, Percutaneous Endoscopic Approach

✓ Valid for 2027O.R. procedure

Short description: Insertion of Neuro Lead into Cranial 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 00HE4MZ

00HE4MZ is the ICD-10-PCS code for a insertion procedure on the cranial 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).

For a different body part, codes include 00H04MZ (brain), 00H64MZ (cerebral ventricle), 00HU4MZ (spinal canal) and 00HV4MZ (spinal cord).

The same procedure with a different approach is coded 00HE0MZ (open) and 00HE3MZ (percutaneous).

With a different device, use 00HE41Z (radioactive element), 00HE42Z (monitoring device), 00HE43Z (infusion device) and 00HE4YZ (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
0Central Nervous System and Cranial Nerves
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
ECranial 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 00HE4MZ

Is 00HE4MZ a valid ICD-10-PCS code for 2027?

Yes. 00HE4MZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 00HE4MZ an O.R. procedure?

Yes. 00HE4MZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 00HE4MZ group to?

Depending on the principal diagnosis, 00HE4MZ 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 00HE4MZ?

The CMS GEMs map 00HE4MZ to ICD-9-CM 04.92 (Implantation or replacement of peripheral neurostimulator lead(s)).