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ICD-10-PCS 2027 procedure code

02U50KZSupplement Atrial Septum with Nonautologous Tissue Substitute, Open Approach

✓ Valid for 2027O.R. procedure

Short description: Supplement Atrial Septum with Nonaut Sub, Open 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 02U50KZ

02U50KZ is the ICD-10-PCS code for a supplement procedure on the atrial septum using an open approach with nonautologous tissue substitute. In ICD-10-PCS, supplement means putting in or on biological or synthetic material that physically reinforces and/or augments the function of a portion of a body part.

In plain terms, this corresponds to repair of atrial septal defect with tissue graft, the ICD-9-CM procedure title it maps to (35.61).

For a different body part, codes include 02U00KZ (coronary artery, one artery), 02U10KZ (coronary artery, two arteries), 02U20KZ (coronary artery, three arteries), 02U30KZ (coronary artery, four or more arteries), 02U60KZ (right atrium), 02U70KZ (left atrium) and 19 more.

The same procedure with a different approach is coded 02U53KZ (percutaneous) and 02U54KZ (percutaneous endoscopic).

With a different device, use 02U507Z (autologous tissue substitute), 02U508Z (zooplastic tissue) and 02U50JZ (synthetic substitute).

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
USupplement

Putting in or on biological or synthetic material that physically reinforces and/or augments the function of a portion of a body part

The biological material is non-living, or is living and from the same individual. The body part may have been previously replaced, and the Supplement procedure is performed to physically reinforce and/or augment the function of the replaced body part

Includes: Herniorrhaphy using mesh, mitral valve ring annuloplasty, put a new acetabular liner in a previous hip replacement

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
KNonautologous Tissue Substitute

Includes: Acellular Hydrated Dermis; Bone bank bone graft; Cook Biodesign(R) Fistula Plug(s); Cook Biodesign(R) Hernia Graft(s); Cook Biodesign(R) Layered Graft(s); Cook Zenapro(tm) Layered Graft(s); Fish skin; Kerecis(R) (GraftGuide) (MariGen) (SurgiBind) (SurgiClose); MIRODERM(tm) Biologic Wound Matrix; Piscine skin; Tissue bank graft

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 →
  • 35.61Repair of atrial septal defect with tissue graftapproximate

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 02U50KZ

Is 02U50KZ a valid ICD-10-PCS code for 2027?

Yes. 02U50KZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 02U50KZ an O.R. procedure?

Yes. 02U50KZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 02U50KZ group to?

Depending on the principal diagnosis, 02U50KZ can group to MS-DRG 228 and MS-DRG 229.

What is the ICD-9 procedure code for 02U50KZ?

The CMS GEMs map 02U50KZ to ICD-9-CM 35.61 (Repair of atrial septal defect with tissue graft).