4A160BZMonitoring of Lymphatic Pressure, Open Approach
- Billable / Specific Code
4A160BZ is a billable ICD-10-PCS procedure code for Monitoring of Lymphatic Pressure, Open Approach. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to 6 MS-DRGs. The root operation Monitoring involves determining the level of a physiological or physical function repetitively over a period of time. In AHRQ's Clinical Classifications Software (CCSR), this procedure falls under Measurement and monitoring, NEC.
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 | 1 | Monitoring |
| 4 | BodySystem | 6 | Lymphatic |
| 5 | Approach | 0 | Open |
| 6 | Function/Device | B | Pressure |
| 7 | Qualifier | Z | No Qualifier |
In the ICD-10-PCS Alphabetic Index
These FY 2027 ICD-10-PCS Alphabetic Index entries lead to this code:
To code monitoring of the pressure lymphatic, open the FY 2027 ICD-10-PCS Alphabetic Index at Monitoring, then the subterms Lymphatic, Pressure. The index leads to table 4A1, where the approach, Function/Device and qualifier values shown in the breakdown above complete the seven-character code 4A160BZ.
Clinical Classification (CCSR)
AHRQ groups this procedure code into these clinical categories.
Convert to ICD-9-PCS
Closest ICD-9-PCS equivalents for this code under the General Equivalence Mappings.
Similar Procedure Codes
Questions About 4A160BZ
Is 4A160BZ a billable code?
Yes. This is a complete seven-character ICD-10-PCS code, specific enough to report Monitoring of Lymphatic Pressure, Open Approach on inpatient claims from October 1, 2026 through September 30, 2027.
What do the characters in 4A160BZ mean?
The code 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 0 is the Approach (Open); the 6th character B is the Function/Device (Pressure); the 7th character Z is the Qualifier (No Qualifier).
What MS-DRG does 4A160BZ group to?
On an inpatient stay, Monitoring of Lymphatic Pressure, Open Approach maps to MS-DRGs 579, 580, 581, 802, 803, 804, with relative weights from 1.4218 to 3.7002. The MS-DRG sets the fixed Medicare payment for the stay.
What is the ICD-9-PCS equivalent of 4A160BZ?
Under the General Equivalence Mappings, Monitoring of Lymphatic Pressure, Open Approach crosswalks to ICD-9-PCS 40.19 (Other diagnostic procedures on lymphatic structures). The mapping is approximate, so confirm it fits the documentation.
