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ICD-10-PCS 2027 procedure code

03HL4MZInsertion of Stimulator Lead into Left Internal Carotid Artery, Percutaneous Endoscopic Approach

✓ Valid for 2027O.R. procedure

Short description: Insert of Stim Lead into L Int Carotid, 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 03HL4MZ

03HL4MZ is the ICD-10-PCS code for a insertion procedure on the left internal carotid artery using a percutaneous endoscopic approach with stimulator 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 carotid sinus stimulation lead(s) only, the ICD-9-CM procedure title it maps to (39.82).

For a different body part, codes include 03HK4MZ (right internal carotid artery).

The same procedure with a different approach is coded 03HL0MZ (open) and 03HL3MZ (percutaneous).

With a different device, use 03HL43Z (infusion device) and 03HL4DZ (intraluminal device).

It is an operating-room procedure in the MS-DRG logic for DRG 252 (Other Vascular Procedures with MCC), DRG 253 (Other Vascular Procedures with CC) and DRG 254 (Other Vascular Procedures without CC/MCC), under the surgical category “Other Vascular 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
3Upper Arteries
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
LInternal Carotid Artery, Left

Includes: Caroticotympanic artery; Carotid sinus

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
MStimulator 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.

ICD-9-CM equivalent

Converter →
  • 39.82Implantation or replacement of carotid sinus stimulation lead(s) onlyapproximate

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 03HL4MZ

Is 03HL4MZ a valid ICD-10-PCS code for 2027?

Yes. 03HL4MZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 03HL4MZ an O.R. procedure?

Yes. 03HL4MZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 03HL4MZ group to?

Depending on the principal diagnosis, 03HL4MZ can group to MS-DRG 252, MS-DRG 253 and MS-DRG 254.

What is the ICD-9 procedure code for 03HL4MZ?

The CMS GEMs map 03HL4MZ to ICD-9-CM 39.82 (Implantation or replacement of carotid sinus stimulation lead(s) only).