ICD-10-PCS 2027 procedure code
03704Z1Dilation of Right Internal Mammary Artery using Drug-Coated Balloon, Percutaneous Endoscopic Approach
Short description: Dilate of R Int Mamm Art using Drug Blln, Perc Endo Approach
Code last changed in FY2019 (effective October 1, 2018). Source: official FY2027 ICD-10-PCS release from CMS. Page updated September 29, 2026. About our data
About 03704Z1
03704Z1 is the ICD-10-PCS code for a dilation procedure on the right internal mammary artery using a percutaneous endoscopic approach (qualifier: drug-coated balloon). In ICD-10-PCS, dilation means expanding an orifice or the lumen of a tubular body part.
For a different body part, codes include 03714Z1 (left internal mammary artery), 03724Z1 (innominate artery), 03734Z1 (right subclavian artery), 03744Z1 (left subclavian artery), 03754Z1 (right axillary artery), 03764Z1 (left axillary artery) and 6 more.
The same procedure with a different approach is coded 03700Z1 (open) and 03703Z1 (percutaneous).
With a different device, use 03704D1 (intraluminal device).
It is an operating-room procedure in the MS-DRG logic for DRG 252 (Other Vascular Procedures with MCC), DRG 253 (Other Vascular Procedures with CC) and DRG 254 (Other Vascular Procedures without CC/MCC), under the surgical category “Other Vascular Procedures”.
It was added in FY2019, effective October 1, 2018.
What each character means
- 1. Section
- 0Medical and Surgical
- 2. Body System
- 3Upper Arteries
- 3. Operation
- 7Dilation
Expanding an orifice or the lumen of a tubular body part
The orifice can be a natural orifice or an artificially created orifice. Accomplished by stretching a tubular body part using intraluminal pressure or by cutting part of the orifice or wall of the tubular body part
Includes: Percutaneous transluminal angioplasty, internal urethrotomy
- 4. Body Part
- 0Internal Mammary Artery, Right
- 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
- 1Drug-Coated Balloon
Other versions of this procedure
Different body part
- 03714Z1Internal Mammary Artery, Left
- 03724Z1Innominate Artery
- 03734Z1Subclavian Artery, Right
- 03744Z1Subclavian Artery, Left
- 03754Z1Axillary Artery, Right
- 03764Z1Axillary Artery, Left
- 03774Z1Brachial Artery, Right
- 03784Z1Brachial Artery, Left
- 03794Z1Ulnar Artery, Right
- 037A4Z1Ulnar Artery, Left
- 037B4Z1Radial Artery, Right
- 037C4Z1Radial Artery, Left
Different approach
Different device
Different qualifier
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 Vascular Procedures
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2019 (effective 10/1/2018): Added
- No changes since FY2019.
Common questions about 03704Z1
Is 03704Z1 a valid ICD-10-PCS code for 2027?
- Yes. 03704Z1 is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
Is 03704Z1 an O.R. procedure?
- Yes. 03704Z1 is an O.R. procedure in MS-DRG v44.0.
What DRG does 03704Z1 group to?
- Depending on the principal diagnosis, 03704Z1 can group to MS-DRG 252, MS-DRG 253 and MS-DRG 254.