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ICD-10-PCS 2027 procedure code

02H70MZInsertion of Cardiac Lead into Left Atrium, Open Approach

✓ Valid for 2027Non-O.R. procedure

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 02H70MZ

02H70MZ is the ICD-10-PCS code for a insertion procedure on the left atrium using an open approach with cardiac 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 initial insertion of lead [electrode], not otherwise specified, the ICD-9-CM procedure title it maps to (37.70).

For a different body part, codes include 02H40MZ (coronary vein), 02H60MZ (right atrium), 02HK0MZ (right ventricle), 02HL0MZ (left ventricle) and 02HN0MZ (pericardium).

The same procedure with a different approach is coded 02H73MZ (percutaneous) and 02H74MZ (percutaneous endoscopic).

With a different device, use 02H700Z (monitoring device, pressure sensor), 02H702Z (monitoring device), 02H703Z (infusion device), 02H70DZ (intraluminal device), 02H70JZ (cardiac lead, pacemaker), 02H70KZ (cardiac lead, defibrillator) and 2 more.

It is a non-O.R. procedure that is part of the MS-DRG logic for DRG 210 (Cardiac Pacemaker Revision or Device Replacement with MCC) and DRG 211 (Cardiac Pacemaker Revision or Device Replacement without MCC), under the surgical category “Cardiac Pacemaker Revision or Device Replacement”.

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
2Heart and Great Vessels
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
7Atrium, Left

Includes: Atrium pulmonale; Left auricular appendix

5. Approach
0Open

Cutting through the skin or mucous membrane and any other body layers necessary to expose the site of the procedure

6. Device
MCardiac 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 05 · Diseases and Disorders of the Circulatory System · Cardiac Pacemaker Revision or Device Replacement

ICD-9-CM equivalent

Converter →
  • 37.70Initial insertion of lead [electrode], not otherwise specifiedapproximate

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 02H70MZ

Is 02H70MZ a valid ICD-10-PCS code for 2027?

Yes. 02H70MZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 02H70MZ an O.R. procedure?

No. 02H70MZ is designated non-O.R. in MS-DRG v44.0.

What DRG does 02H70MZ group to?

Depending on the principal diagnosis, 02H70MZ can group to MS-DRG 210 and MS-DRG 211.

What is the ICD-9 procedure code for 02H70MZ?

The CMS GEMs map 02H70MZ to ICD-9-CM 37.70 (Initial insertion of lead [electrode], not otherwise specified).