ICD-10-PCS 2027 procedure code
02104ZCBypass Coronary Artery, One Artery from Thoracic Artery, Percutaneous Endoscopic Approach
Short description: Bypass 1 Cor Art from Thor Art, Perc Endo Approach
Code last changed in FY2017 (effective October 1, 2016). Source: official FY2027 ICD-10-PCS release from CMS. Page updated September 29, 2026. About our data
About 02104ZC
02104ZC is the ICD-10-PCS code for a bypass procedure on the coronary artery, one artery using a percutaneous endoscopic approach (qualifier: thoracic 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 single internal mammary-coronary artery bypass, the ICD-9-CM procedure title it maps to (36.15).
For a different body part, codes include 02114ZC (coronary artery, two arteries), 02124ZC (coronary artery, three arteries), 02134ZC (coronary artery, four or more arteries), 021K4ZC (right ventricle) and 021L4ZC (left ventricle).
The same procedure with a different approach is coded 02100ZC (open).
With a different device, use 021048C (zooplastic tissue), 021049C (autologous venous tissue), 02104AC (autologous arterial tissue), 02104JC (synthetic substitute) and 02104KC (nonautologous tissue substitute).
It is an operating-room procedure in the MS-DRG logic for DRG 231 (Coronary Bypass with PTCA with MCC), DRG 232 (Coronary Bypass with PTCA without MCC), DRG 233 (Coronary Bypass with Cardiac Catheterization or Open Ablation with MCC), DRG 234 (Coronary Bypass with Cardiac Catheterization or Open Ablation without MCC), DRG 235 (Coronary Bypass without Cardiac Catheterization with MCC) and DRG 236 (Coronary Bypass without Cardiac Catheterization without MCC), under the surgical categories “” and “Coronary Bypass without Cardiac Catheterization”.
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
- 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
- 0Coronary Artery, One Artery
- 5. Approach
- 4Percutaneous Endoscopic
Entry, by puncture or minor incision, of instrumentation through the skin or mucous membrane and any other body layers necessary to reach and visualize the site of the procedure
- 6. Device
- ZNo Device
- 7. Qualifier
- CThoracic Artery
Other versions of this procedure
Different body part
Different approach
Different device
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
MDC 05 · Diseases and Disorders of the Circulatory System
MDC 05 · Diseases and Disorders of the Circulatory System · Coronary Bypass without Cardiac Catheterization
ICD-9-CM equivalent
Converter →- 36.15Single internal mammary-coronary artery bypassapproximate
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- FY2017 (effective 10/1/2016): Title revised — was “Bypass Coronary Artery, One Site from Thoracic Artery, Percutaneous Endoscopic Approach”
Common questions about 02104ZC
Is 02104ZC a valid ICD-10-PCS code for 2027?
- Yes. 02104ZC is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
Is 02104ZC an O.R. procedure?
- Yes. 02104ZC is an O.R. procedure in MS-DRG v44.0.
What DRG does 02104ZC group to?
- Depending on the principal diagnosis, 02104ZC can group to MS-DRG 231, MS-DRG 232, MS-DRG 233, MS-DRG 234, MS-DRG 235 and MS-DRG 236.
What is the ICD-9 procedure code for 02104ZC?
- The CMS GEMs map 02104ZC to ICD-9-CM 36.15 (Single internal mammary-coronary artery bypass).