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ICD-10-PCS 2027 procedure code

04100A4Bypass Abdominal Aorta to Left Renal Artery with Autologous Arterial Tissue, Open Approach

✓ Valid for 2027O.R. procedure

Short description: Bypass Abd Aorta to L Renal A with Autol Art, 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 04100A4

04100A4 is the ICD-10-PCS code for a bypass procedure on the abdominal aorta using an open approach with autologous arterial tissue (qualifier: left renal artery). In ICD-10-PCS, bypass means altering the route of passage of the contents of a tubular body part.

In plain terms, this corresponds to Aorta-renal bypass, the ICD-9-CM procedure title it maps to (39.24).

For a different body part, codes include 04130A4 (hepatic artery), 04140A4 (splenic artery), 041C0A4 (right common iliac artery) and 041D0A4 (left common iliac artery).

The same procedure with a different approach is coded 04104A4 (percutaneous endoscopic).

With a different device, use 0410094 (autologous venous tissue), 04100J4 (synthetic substitute), 04100K4 (nonautologous tissue substitute) and 04100Z4 (no device).

It is an operating-room procedure in the MS-DRG logic for DRG 268 (Aortic and Heart Assist Procedures Except Pulsation Balloon with MCC), DRG 269 (Aortic and Heart Assist Procedures Except Pulsation Balloon without MCC), DRG 656 (Kidney and Ureter Procedures for Neoplasm with MCC), DRG 657 (Kidney and Ureter Procedures for Neoplasm with CC), DRG 658 (Kidney and Ureter Procedures for Neoplasm without CC/MCC) and DRG 659 (Kidney and Ureter Procedures for Non-Neoplasm with MCC), under the surgical categories “Aortic and Heart Assist Procedures Except Pulsation Balloon”, “”, “Kidney and Ureter Procedures for Non-Neoplasm” and 2 more.

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
4Lower Arteries
3. Operation
1Bypass

Altering the route of passage of the contents of a tubular body part

Rerouting contents of a body part to a downstream area of the normal route, to a similar route and body part, or to an abnormal route and dissimilar body part. Includes one or more anastomoses, with or without the use of a device

Includes: Coronary artery bypass, colostomy formation

4. Body Part
0Abdominal Aorta

Includes: Inferior phrenic artery; Lumbar artery; Median sacral artery; Middle suprarenal artery; Ovarian artery; Testicular artery

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
AAutologous Arterial Tissue
7. Qualifier
4Renal Artery, Left

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 · Aortic and Heart Assist Procedures Except Pulsation Balloon

ICD-9-CM equivalent

Converter →
  • 39.24Aorta-renal bypassapproximate

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 04100A4

Is 04100A4 a valid ICD-10-PCS code for 2027?

Yes. 04100A4 is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 04100A4 an O.R. procedure?

Yes. 04100A4 is an O.R. procedure in MS-DRG v44.0.

What DRG does 04100A4 group to?

Depending on the principal diagnosis, 04100A4 can group to MS-DRG 268, MS-DRG 269, MS-DRG 656, MS-DRG 657, MS-DRG 658 and MS-DRG 659.

What is the ICD-9 procedure code for 04100A4?

The CMS GEMs map 04100A4 to ICD-9-CM 39.24 (Aorta-renal bypass).