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ICD-10-PCS 2027 procedure code

04100Z2Bypass Abdominal Aorta to Mesenteric Artery, 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 04100Z2

04100Z2 is the ICD-10-PCS code for a bypass procedure on the abdominal aorta using an open approach (qualifier: mesenteric 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 other intra-abdominal vascular shunt or bypass, the ICD-9-CM procedure title it maps to (39.26).

For a different body part, codes include 041C0Z2 (right common iliac artery) and 041D0Z2 (left common iliac artery).

The same procedure with a different approach is coded 04104Z2 (percutaneous endoscopic).

With a different device, use 0410092 (autologous venous tissue), 04100A2 (autologous arterial tissue), 04100J2 (synthetic substitute) and 04100K2 (nonautologous tissue substitute).

It is an operating-room procedure in the MS-DRG logic for DRG 270 (Other Major Cardiovascular Procedures with MCC), DRG 271 (Other Major Cardiovascular Procedures with CC), DRG 272 (Other Major Cardiovascular Procedures without CC/MCC), DRG 356 (Other Digestive System O.R. Procedures with MCC), DRG 357 (Other Digestive System O.R. Procedures with CC) and DRG 358 (Other Digestive System O.R. Procedures without CC/MCC), under the surgical categories “Other Major Cardiovascular Procedures”, “Other Digestive System O.R. Procedures”, “” and 1 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
ZNo Device
7. Qualifier
2Mesenteric Artery

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.

ICD-9-CM equivalent

Converter →
  • 39.26Other intra-abdominal vascular shunt or 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 04100Z2

Is 04100Z2 a valid ICD-10-PCS code for 2027?

Yes. 04100Z2 is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 04100Z2 an O.R. procedure?

Yes. 04100Z2 is an O.R. procedure in MS-DRG v44.0.

What DRG does 04100Z2 group to?

Depending on the principal diagnosis, 04100Z2 can group to MS-DRG 270, MS-DRG 271, MS-DRG 272, MS-DRG 356, MS-DRG 357 and MS-DRG 358.

What is the ICD-9 procedure code for 04100Z2?

The CMS GEMs map 04100Z2 to ICD-9-CM 39.26 (Other intra-abdominal vascular shunt or bypass).