4A14X51Monitoring of Venous Flow, Peripheral, External Approach

Measurement and Monitoring›Physiological Systems›Monitoring
  • Billable / Specific Code
ICD-10-PCS 4A14X51
CMS Source: FY 2026 ICD-10-PCS dataset. Effective Oct 1, 2025 – Sep 30, 2026.FacebookXLinkedInPrint

4A14X51 is a billable ICD-10-PCS procedure code for Monitoring of Venous Flow, Peripheral, External Approach. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). The root operation Monitoring involves determining the level of a physiological or physical function repetitively over a period of time.

Code Identity

ICD-10-PCS Code
4A14X51
Billable Status
Yes — Valid for Submission
Code Describes
Monitoring of Venous Flow, Peripheral, External Approach
Parent Code
4A1
Short Description
Monitoring of Venous Flow, Peripheral, External Approach

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.

PositionDesignationValueMeaning
1Section4Measurement and Monitoring
2Body SystemAPhysiological Systems
3Operation1Monitoring
4BodySystem4Venous
5ApproachXExternal
6Function/Device5Flow
7Qualifier1Peripheral

Convert to ICD-9-PCS

Closest ICD-9-PCS equivalents for 4A14X51 under the General Equivalence Mappings.

89.59
Approximate match.

Code History

Replaced in the FY 2026 code set by:
  • XX25X0A — Monitoring of Blood Flow Adhesive US Patch Tech, New Tech 1

Similar Procedure Codes

Questions About 4A14X51

Is 4A14X51 a billable code?

Yes. 4A14X51 is a complete seven-character ICD-10-PCS code, specific enough to report Monitoring of Venous Flow, Peripheral, External Approach on inpatient claims from October 1, 2025 through September 30, 2026.

What do the characters in 4A14X51 mean?

4A14X51 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 1 is the Operation (Monitoring); the 4th character 4 is the BodySystem (Venous); the 5th character X is the Approach (External); the 6th character 5 is the Function/Device (Flow); the 7th character 1 is the Qualifier (Peripheral).

What is the ICD-9-PCS equivalent of 4A14X51?

Under the General Equivalence Mappings, Monitoring of Venous Flow, Peripheral, External Approach crosswalks to ICD-9-PCS 89.59. The mapping is approximate, so confirm it fits the documentation.