079940ZDrainage of Left Internal Mammary Lymphatic with Drainage Device, Percutaneous Endoscopic Approach
- Billable / Specific Code
079940Z is a billable ICD-10-PCS procedure code for Drainage of Left Internal Mammary Lymphatic with Drainage Device, 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 Drainage involves taking or letting out fluids and/or gases from a 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 | 7 | Lymphatic and Hemic Systems |
| 3 | Operation | 9 | Drainage |
| 4 | BodyPart | 9 | Lymphatic, Internal Mammary, Left |
| 5 | Approach | 4 | Percutaneous Endoscopic |
| 6 | Device | 0 | Drainage Device |
| 7 | Qualifier | Z | No Qualifier |
Convert to ICD-9-PCS
Closest ICD-9-PCS equivalents for 079940Z under the General Equivalence Mappings.
Code History
- 079980Z — Drainage of Int Mamm, L Lymph with Drain Dev, Endo
Similar Procedure Codes
Questions About 079940Z
Is 079940Z a billable code?
Yes. 079940Z is a complete seven-character ICD-10-PCS code, specific enough to report Drainage of Left Internal Mammary Lymphatic with Drainage Device, Percutaneous Endoscopic Approach on inpatient claims from October 1, 2025 through September 30, 2026.
What do the characters in 079940Z mean?
079940Z breaks down character by character: the 1st character 0 is the Section (Medical and Surgical); the 2nd character 7 is the Body System (Lymphatic and Hemic Systems); the 3rd character 9 is the Operation (Drainage); the 4th character 9 is the BodyPart (Lymphatic, Internal Mammary, Left); the 5th character 4 is the Approach (Percutaneous Endoscopic); the 6th character 0 is the Device (Drainage Device); the 7th character Z is the Qualifier (No Qualifier).
What MS-DRG does 079940Z group to?
On an inpatient stay, Drainage of Left Internal Mammary Lymphatic with Drainage Device, Percutaneous Endoscopic Approach maps to MS-DRGs 579, 580, 581, 802, 803, 804, with relative weights from 1.3560 to 3.9841. The MS-DRG sets the fixed Medicare payment for the stay.
What is the ICD-9-PCS equivalent of 079940Z?
Under the General Equivalence Mappings, Drainage of Left Internal Mammary Lymphatic with Drainage Device, Percutaneous Endoscopic Approach crosswalks to ICD-9-PCS 40.0. The mapping is approximate, so confirm it fits the documentation.
