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ICD-10-PCS 2027 procedure code

02T50ZZResection of Atrial Septum, 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 02T50ZZ

02T50ZZ is the ICD-10-PCS code for a resection procedure on the atrial septum using an open approach. In ICD-10-PCS, resection means cutting out or off, without replacement, all of a body part.

In plain terms, this corresponds to other operations on septa of heart, the ICD-9-CM procedure title it maps to (35.98).

For a different body part, codes include 02T80ZZ (conduction mechanism), 02T90ZZ (chordae tendineae), 02TD0ZZ (papillary muscle), 02TH0ZZ (pulmonary valve), 02TM0ZZ (ventricular septum) and 02TN0ZZ (pericardium).

The same procedure with a different approach is coded 02T53ZZ (percutaneous) and 02T54ZZ (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
TResection

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

Includes: Total nephrectomy, total lobectomy of lung

4. Body Part
5Atrial Septum

Includes: Interatrial septum

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 →
  • 35.98Other operations on septa of heartapproximate

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 02T50ZZ

Is 02T50ZZ a valid ICD-10-PCS code for 2027?

Yes. 02T50ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 02T50ZZ an O.R. procedure?

Yes. 02T50ZZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 02T50ZZ group to?

Depending on the principal diagnosis, 02T50ZZ can group to MS-DRG 228 and MS-DRG 229.

What is the ICD-9 procedure code for 02T50ZZ?

The CMS GEMs map 02T50ZZ to ICD-9-CM 35.98 (Other operations on septa of heart).