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ICD-10-PCS 2027 procedure code

00HE42ZInsertion of Monitoring Device into Cranial Nerve, Percutaneous Endoscopic Approach

✓ Valid for 2027O.R. procedure

Short description: Insert of Monitor Dev 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 00HE42Z

00HE42Z is the ICD-10-PCS code for a insertion procedure on the cranial nerve using a percutaneous endoscopic approach with monitoring device. 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 other incision of cranial and peripheral nerves, the ICD-9-CM procedure title it maps to (04.04).

For a different body part, codes include 00H042Z (brain), 00H642Z (cerebral ventricle), 00HU42Z (spinal canal) and 00HV42Z (spinal cord).

The same procedure with a different approach is coded 00HE02Z (open) and 00HE32Z (percutaneous).

With a different device, use 00HE41Z (radioactive element), 00HE43Z (infusion device), 00HE4MZ (neurostimulator lead) 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) 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 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
2Monitoring Device

Includes: Blood glucose monitoring system; Cardiac event recorder; Continuous Glucose Monitoring (CGM) device; Implantable glucose monitoring device; Loop recorder, implantable; Reveal (LINQ)(DX)(XT)

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.

ICD-9-CM equivalent

Converter →
  • 04.04Other incision of cranial and peripheral nervesapproximate

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 00HE42Z

Is 00HE42Z a valid ICD-10-PCS code for 2027?

Yes. 00HE42Z is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 00HE42Z an O.R. procedure?

Yes. 00HE42Z is an O.R. procedure in MS-DRG v44.0.

What DRG does 00HE42Z group to?

Depending on the principal diagnosis, 00HE42Z can group to MS-DRG 040, MS-DRG 041 and MS-DRG 042.

What is the ICD-9 procedure code for 00HE42Z?

The CMS GEMs map 00HE42Z to ICD-9-CM 04.04 (Other incision of cranial and peripheral nerves).