4A0C45ZMeasurement of Biliary Flow, Percutaneous Endoscopic Approach
- Billable / Specific Code
4A0C45Z is a billable ICD-10-PCS procedure code for Measurement of Biliary Flow, Percutaneous Endoscopic Approach. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to 6 MS-DRGs. The root operation Measurement involves determining the level of a physiological or physical function at a point in time.
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 | 4 | Measurement and Monitoring |
| 2 | Body System | A | Physiological Systems |
| 3 | Operation | 0 | Measurement |
| 4 | BodySystem | C | Biliary |
| 5 | Approach | 4 | Percutaneous Endoscopic |
| 6 | Function/Device | 5 | Flow |
| 7 | Qualifier | Z | No Qualifier |
Convert to ICD-9-PCS
Closest ICD-9-PCS equivalents for 4A0C45Z under the General Equivalence Mappings.
Similar Procedure Codes
Questions About 4A0C45Z
Is 4A0C45Z a billable code?
Yes. 4A0C45Z is a complete seven-character ICD-10-PCS code, specific enough to report Measurement of Biliary Flow, Percutaneous Endoscopic Approach on inpatient claims from October 1, 2025 through September 30, 2026.
What do the characters in 4A0C45Z mean?
4A0C45Z breaks down character by character: the 1st character 4 is the Section (Measurement and Monitoring); the 2nd character A is the Body System (Physiological Systems); the 3rd character 0 is the Operation (Measurement); the 4th character C is the BodySystem (Biliary); the 5th character 4 is the Approach (Percutaneous Endoscopic); the 6th character 5 is the Function/Device (Flow); the 7th character Z is the Qualifier (No Qualifier).
What MS-DRG does 4A0C45Z group to?
On an inpatient stay, Measurement of Biliary Flow, Percutaneous Endoscopic Approach maps to MS-DRGs 356, 357, 358, 420, 421, 422, with relative weights from 1.3979 to 4.3928. The MS-DRG sets the fixed Medicare payment for the stay.
What is the ICD-9-PCS equivalent of 4A0C45Z?
Under the General Equivalence Mappings, Measurement of Biliary Flow, Percutaneous Endoscopic Approach crosswalks to ICD-9-PCS 51.19. The mapping is approximate, so confirm it fits the documentation.
