03700ZZDilation of Right Internal Mammary Artery, Open Approach
- Billable / Specific Code
03700ZZ is a billable ICD-10-PCS procedure code for Dilation of Right Internal Mammary Artery, Open Approach. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRGs 252, 253, 254. The root operation Dilation involves expanding an orifice or the lumen of a tubular body part.
Code Identity
PCS Table Breakdown
Each ICD-10-PCS code is built from seven characters, each an axis of the procedure. Hover or tap the icons for the official CMS definitions.
| Position | Designation | Value | Meaning |
|---|---|---|---|
| 1 | Section | 0 | Medical and Surgical |
| 2 | Body System | 3 | Upper Arteries |
| 3 | Operation | 7 | Dilation |
| 4 | BodyPart | 0 | Internal Mammary Artery, Right |
| 5 | Approach | 0 | Open |
| 6 | Device | Z | No Device |
| 7 | Qualifier | Z | No Qualifier |
Convert to ICD-9-PCS
Closest ICD-9-PCS equivalents for 03700ZZ under the General Equivalence Mappings.
Code History
- 03700Z1 — Dilation of R Int Mamm Art using Drug Blln, Open Approach
Similar Procedure Codes
Questions About 03700ZZ
Is 03700ZZ a billable code?
Yes. 03700ZZ is a complete seven-character ICD-10-PCS code, specific enough to report Dilation of Right Internal Mammary Artery, Open Approach on inpatient claims from October 1, 2025 through September 30, 2026.
What do the characters in 03700ZZ mean?
03700ZZ breaks down character by character: the 1st character 0 is the Section (Medical and Surgical); the 2nd character 3 is the Body System (Upper Arteries); the 3rd character 7 is the Operation (Dilation); the 4th character 0 is the BodyPart (Internal Mammary Artery, Right); the 5th character 0 is the Approach (Open); the 6th character Z is the Device (No Device); the 7th character Z is the Qualifier (No Qualifier).
What MS-DRG does 03700ZZ group to?
On an inpatient stay, Dilation of Right Internal Mammary Artery, Open Approach maps to MS-DRGs 252, 253, 254, with relative weights from 1.7817 to 3.4883. The MS-DRG sets the fixed Medicare payment for the stay.
What is the ICD-9-PCS equivalent of 03700ZZ?
Under the General Equivalence Mappings, Dilation of Right Internal Mammary Artery, Open Approach crosswalks to ICD-9-PCS 39.50 and 40. The mapping is approximate, so confirm it fits the documentation.
