ICD-10-PCS 2027 procedure code
079L0ZZDrainage of Cisterna Chyli, Open Approach
Code unchanged since ICD-10-PCS took effect on October 1, 2015. Source: official FY2027 ICD-10-PCS release from CMS. Page updated September 29, 2026. About our data
About 079L0ZZ
079L0ZZ is the ICD-10-PCS code for a drainage procedure on the cisterna chyli using an open approach. In ICD-10-PCS, drainage means taking or letting out fluids and/or gases from a body part.
In plain terms, this corresponds to fistulization of thoracic duct, the ICD-9-CM procedure title it maps to (40.62).
For a different body part, codes include 07900ZZ (lymphatic, head), 07910ZZ (lymphatic, right neck), 07920ZZ (lymphatic, left neck), 07930ZZ (lymphatic, right upper extremity), 07940ZZ (lymphatic, left upper extremity), 07950ZZ (lymphatic, right axillary) and 15 more.
The same procedure with a different approach is coded 079L3ZZ (percutaneous), 079L4ZZ (percutaneous endoscopic) and 079L8ZZ (via natural or artificial opening endoscopic).
With a different device, use 079L00Z (drainage device).
It is an operating-room procedure in the MS-DRG logic for DRG 163 (Major Chest Procedures with MCC), DRG 164 (Major Chest Procedures with CC), DRG 165 (Major Chest Procedures without CC/MCC), DRG 907 (Other O.R. Procedures for Injuries with MCC), DRG 908 (Other O.R. Procedures for Injuries with CC) and DRG 909 (Other O.R. Procedures for Injuries without CC/MCC), under the surgical categories “Major Chest Procedures”, “Other O.R. Procedures for Injuries” and “Other O.R. Procedures for Multiple Significant Trauma”.
It has been valid since ICD-10-PCS took effect on October 1, 2015.
What each character means
- 1. Section
- 0Medical and Surgical
- 2. Body System
- 7Lymphatic and Hemic Systems
- 3. Operation
- 9Drainage
Taking or letting out fluids and/or gases from a body part
The qualifier DIAGNOSTIC is used to identify drainage procedures that are biopsies
Includes: Thoracentesis, incision and drainage
- 4. Body Part
- LCisterna Chyli
Includes: Intestinal lymphatic trunk; Lumbar lymphatic trunk
- 5. Approach
- 0Open
Cutting through the skin or mucous membrane and any other body layers necessary to expose the site of the procedure
- 6. Device
- ZNo Device
- 7. Qualifier
- ZNo Qualifier
Other versions of this procedure
Different body part
- 07900ZZLymphatic, Head
- 07910ZZLymphatic, Right Neck
- 07920ZZLymphatic, Left Neck
- 07930ZZLymphatic, Right Upper Extremity
- 07940ZZLymphatic, Left Upper Extremity
- 07950ZZLymphatic, Right Axillary
- 07960ZZLymphatic, Left Axillary
- 07970ZZLymphatic, Thorax
- 07980ZZLymphatic, Internal Mammary, Right
- 07990ZZLymphatic, Internal Mammary, Left
- 079B0ZZLymphatic, Mesenteric
- 079C0ZZLymphatic, Pelvis
Different approach
Different device
Different qualifier
MS-DRG v44.0 grouping
All DRGs →Surgical MS-DRGs this procedure can group to, depending on the principal diagnosis's MDC.
MDC 04 · Diseases and Disorders of the Respiratory System · Major Chest Procedures
MDC 21 · Injuries, Poisonings and Toxic Effects of Drugs · Other O.R. Procedures for Injuries
MDC 24 · Multiple Significant Trauma · Other O.R. Procedures for Multiple Significant Trauma
ICD-9-CM equivalent
Converter →- 40.62Fistulization of thoracic ductapproximate
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about 079L0ZZ
Is 079L0ZZ a valid ICD-10-PCS code for 2027?
- Yes. 079L0ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
Is 079L0ZZ an O.R. procedure?
- Yes. 079L0ZZ is an O.R. procedure in MS-DRG v44.0.
What DRG does 079L0ZZ group to?
- Depending on the principal diagnosis, 079L0ZZ can group to MS-DRG 163, MS-DRG 164, MS-DRG 165, MS-DRG 907, MS-DRG 908 and MS-DRG 909.
What is the ICD-9 procedure code for 079L0ZZ?
- The CMS GEMs map 079L0ZZ to ICD-9-CM 40.62 (Fistulization of thoracic duct).