4A163BZMonitoring of Lymphatic Pressure, Percutaneous Approach

Measurement and Monitoring›Physiological Systems›Monitoring

Billable / Specific Code

ICD-10-PCS 4A163BZ

CMS Source: FY 2026 ICD-10-PCS dataset. Effective Oct 1, 2025 – Sep 30, 2026.

4A163BZ is a billable ICD-10-PCS procedure code for Monitoring of Lymphatic Pressure, Percutaneous 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

4A163BZ

Billable Status

Yes — Valid for Submission

Code Describes

Monitoring of Lymphatic Pressure, Percutaneous Approach

Parent Code

4A1

Short Description

Monitoring of Lymphatic Pressure, Percutaneous 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.

Position	Designation	Value	Meaning
1	Section	4	Measurement and Monitoring
2	Body System	A	Physiological Systems
3	Operation	1	Monitoring
4	BodySystem	6	Lymphatic
5	Approach	3	Percutaneous
6	Function/Device	B	Pressure
7	Qualifier	Z	No Qualifier

Convert to ICD-9-PCS

Closest ICD-9-PCS equivalents for 4A163BZ under the General Equivalence Mappings.

40.19

Approximate match.

Code History

Replaced in the FY 2026 code set by:

4A167BZ — Monitoring of Lymphatic Pressure, Via Opening
4A168BZ — Monitoring of Lymphatic Pressure, Endo

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Questions About 4A163BZ

Is 4A163BZ a billable code?

Yes. 4A163BZ is a complete seven-character ICD-10-PCS code, specific enough to report Monitoring of Lymphatic Pressure, Percutaneous Approach on inpatient claims from October 1, 2025 through September 30, 2026.

What do the characters in 4A163BZ mean?

4A163BZ 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 6 is the BodySystem (Lymphatic); the 5th character 3 is the Approach (Percutaneous); the 6th character B is the Function/Device (Pressure); the 7th character Z is the Qualifier (No Qualifier).

What is the ICD-9-PCS equivalent of 4A163BZ?

Under the General Equivalence Mappings, Monitoring of Lymphatic Pressure, Percutaneous Approach crosswalks to ICD-9-PCS 40.19. The mapping is approximate, so confirm it fits the documentation.