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ICD-10-PCS 2027 procedure code

02B70ZZExcision of Left Atrium, Open Approach

✓ Valid for 2027O.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 02B70ZZ

02B70ZZ is the ICD-10-PCS code for a excision procedure on the left atrium using an open approach. In ICD-10-PCS, excision means cutting out or off, without replacement, a portion of a body part.

In plain terms, this corresponds to excision or destruction of other lesion or tissue of heart, open approach, the ICD-9-CM procedure title it maps to (37.33).

For a different body part, codes include 02B40ZZ (coronary vein), 02B50ZZ (atrial septum), 02B60ZZ (right atrium), 02B80ZZ (conduction mechanism), 02B90ZZ (chordae tendineae), 02BD0ZZ (papillary muscle) and 16 more.

The same procedure with a different approach is coded 02B73ZZ (percutaneous) and 02B74ZZ (percutaneous endoscopic).

It is an operating-room procedure in the MS-DRG logic for DRG 228 (Other Cardiothoracic Procedures with MCC) and DRG 229 (Other Cardiothoracic Procedures without MCC), under the surgical category “Other Cardiothoracic 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
2Heart and Great Vessels
3. Operation
BExcision

Cutting out or off, without replacement, a portion of a body part

The qualifier DIAGNOSTIC is used to identify excision procedures that are biopsies

Includes: Partial nephrectomy, liver biopsy

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
ZNo Device
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 · Other Cardiothoracic Procedures

ICD-9-CM equivalent

Converter →
  • 37.33Excision or destruction of other lesion or tissue of heart, open approachapproximate

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 02B70ZZ

Is 02B70ZZ a valid ICD-10-PCS code for 2027?

Yes. 02B70ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 02B70ZZ an O.R. procedure?

Yes. 02B70ZZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 02B70ZZ group to?

Depending on the principal diagnosis, 02B70ZZ can group to MS-DRG 228 and MS-DRG 229.

What is the ICD-9 procedure code for 02B70ZZ?

The CMS GEMs map 02B70ZZ to ICD-9-CM 37.33 (Excision or destruction of other lesion or tissue of heart, open approach).