ICD-10-PCS 2027 procedure code
03903ZXDrainage of Right Internal Mammary Artery, Percutaneous Approach, Diagnostic
Short description: Drainage of R Int Mamm Art, Perc Approach, Diagn
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 03903ZX
03903ZX is the ICD-10-PCS code for a drainage procedure on the right internal mammary artery using a percutaneous approach (qualifier: diagnostic). In ICD-10-PCS, drainage means taking or letting out fluids and/or gases from a body part.
In plain terms, this corresponds to biopsy of blood vessel, the ICD-9-CM procedure title it maps to (38.21).
For a different body part, codes include 03913ZX (left internal mammary artery), 03923ZX (innominate artery), 03933ZX (right subclavian artery), 03943ZX (left subclavian artery), 03953ZX (right axillary artery), 03963ZX (left axillary artery) and 23 more.
The same procedure with a different approach is coded 03900ZX (open) and 03904ZX (percutaneous endoscopic).
It doesn't appear in the MS-DRG procedure index, so on its own it doesn't change the DRG assignment.
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
- 3Upper Arteries
- 3. Operation
- 9Drainage
Taking or letting out fluids and/or gases from a body part
The qualifier DIAGNOSTIC is used to identify drainage procedures that are biopsies
Includes: Thoracentesis, incision and drainage
- 4. Body Part
- 0Internal Mammary Artery, Right
- 5. Approach
- 3Percutaneous
Entry, by puncture or minor incision, of instrumentation through the skin or mucous membrane and any other body layers necessary to reach the site of the procedure
- 6. Device
- ZNo Device
- 7. Qualifier
- XDiagnostic
Other versions of this procedure
Different body part
- 03913ZXInternal Mammary Artery, Left
- 03923ZXInnominate Artery
- 03933ZXSubclavian Artery, Right
- 03943ZXSubclavian Artery, Left
- 03953ZXAxillary Artery, Right
- 03963ZXAxillary Artery, Left
- 03973ZXBrachial Artery, Right
- 03983ZXBrachial Artery, Left
- 03993ZXUlnar Artery, Right
- 039A3ZXUlnar Artery, Left
- 039B3ZXRadial Artery, Right
- 039C3ZXRadial Artery, Left
Different approach
Different qualifier
ICD-9-CM equivalent
Converter →- 38.21Biopsy of blood vesselapproximate
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)
- No changes since FY2016.
Common questions about 03903ZX
Is 03903ZX a valid ICD-10-PCS code for 2027?
- Yes. 03903ZX is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
What is the ICD-9 procedure code for 03903ZX?
- The CMS GEMs map 03903ZX to ICD-9-CM 38.21 (Biopsy of blood vessel).