2025 ICD-10-CM Procedure Code 079L4ZX

Drainage of Cisterna Chyli, Percutaneous Endoscopic Approach, Diagnostic

ICD-10-PCS Code:: 079L4ZX
ICD-10-PCS Code for:: Drainage of Cisterna Chyli, Perc Endo Approach, Diagn
Is Billable?: Yes - Valid for Submission
Code Navigator:

079L4ZX is a billable procedure code used to specify the performance of drainage of cisterna chyli, percutaneous endoscopic approach, diagnostic. The code is valid for the year 2025 for the submission of HIPAA-covered transactions. The procedure code involves taking or letting out fluids and/or gases from a body part. Procedure code explanation: the qualifier diagnostic is used to identify drainage procedures that are biopsies thoracentesis, incision and drainage

Table of Contents

Code Information
PCS Table
Replaced Code
Clinical Classification
Diagnostic Related Groups Mapping
Convert to ICD-9-PCS
Other Similar Codes

079L4ZX PCS Table

In an PCS table each code is represented by up seven alphanumeric characters, with each character in the table respresenting different aspects of the procedure. In the table provided below, each row represents an individual character and includes information about the character's position, designation, label, and procedure notes. For this PCS table the procedure code is in the medical and surgical section and is part of the lymphatic and hemic systems body system, classified under drainage operation. The applicable bodypart for this procedure code is cisterna chyli.

Position	Designation	Character	Label	Procedures Notes
1	Section	0	Medical and Surgical
2	Body System	7	Lymphatic and Hemic Systems
3	Operation	9	Drainage	Involves: Taking or letting out fluids and/or gases from a body part Explanation: The qualifier DIAGNOSTIC is used to identify drainage procedures that are biopsies Includes: Thoracentesis, incision and drainage
4	BodyPart	L	Cisterna Chyli	Includes: Intestinal lymphatic trunk Lumbar lymphatic trunk
5	Approach	4	Percutaneous Endoscopic	Involves: Entry, by puncture or minor incision, of instrumentation through the skin or mucous membrane and any other body layers necessary to reach and visualize the site of the procedure
6	Device	Z	No Device	Explanation: The value Z is used for the sixth character to indicate that a specific device does not apply to the procedure.
7	Qualifier	X	Diagnostic

Replaced Code

079L4ZX was replaced in the 2025 ICD-10-PCS code set with the code(s):

079L8ZX - Drainage of Cisterna Chyli, Endo Approach, Diagn
079L8ZX - Drainage of Cisterna Chyli, Endo Approach, Diagn
079L8ZX - Drainage of Cisterna Chyli, Endo Approach, Diagn
079L8ZX - Drainage of Cisterna Chyli, Endo Approach, Diagn
079L8ZX - Drainage of Cisterna Chyli, Endo Approach, Diagn
079L8ZX - Drainage of Cisterna Chyli, Endo Approach, Diagn

Clinical Classification

Clinical Category is Lymph node biopsy
CCSR Category Code: LYM001
Clinical Domain is Lymphatic and Hemic System Procedures - LYM contains 11 categories that include procedures performed on the lymphatic and hemic system, such as bone marrow biopsy, lymph node biopsy, lymph node dissection, and splenectomy.

079L4ZX is grouped with Diagnostic Related Groups - MS-DRG Mapping

Diagnostic Related Groups (DRGs) are a classification system used to group together procedures for the purpose of reimbursement and healthcare management. DRGs are used to standardize the way hospitals and other providers are paid for inpatient services. In this system patients are grouped together based on the primary procedure being performed. Once a patient is assigned a particular group, providers receive a predetermined payment rate for the services rendered. This reimbursement rate is often fixed and is meant to cover the cost of care associated with a particular procedure. Reimbursement is also affected by the relative weight of a diagnostic related group based on the severity of a patient's illness and the associated cost of care during hospitalization.

Diagnostic related groups encourage healthcare providers to focus on quality and efficiency in patient care while managing costs effectively. The procedure code 079L4ZX is present in the following groups for version MS-DRG V42.0 applicable from 10/01/2024 through 09/30/2025.

MS-DRG	MS-DRG Title	MCD
040	Peripheral, Cranial Nerve and Other Nervous System Procedures with MCC	01
041	Peripheral, Cranial Nerve and Other Nervous System Procedures with CC or Peripheral Neurostimulator	01
042	Peripheral, Cranial Nerve and Other Nervous System Procedures without CC/MCC	01
356	Other Digestive System O.R. Procedures with MCC	06
357	Other Digestive System O.R. Procedures with CC	06
358	Other Digestive System O.R. Procedures without CC/MCC	06
423	Other Hepatobiliary or Pancreas O.R. Procedures with MCC	07
424	Other Hepatobiliary or Pancreas O.R. Procedures with CC	07
425	Other Hepatobiliary or Pancreas O.R. Procedures without CC/MCC	07
515	Other Musculoskeletal System and Connective Tissue O.R. Procedures with MCC	08
516	Other Musculoskeletal System and Connective Tissue O.R. Procedures with CC	08
517	Other Musculoskeletal System and Connective Tissue O.R. Procedures without CC/MCC	08
579	Other Skin, Subcutaneous Tissue and Breast Procedures with MCC	09
580	Other Skin, Subcutaneous Tissue and Breast Procedures with CC	09
581	Other Skin, Subcutaneous Tissue and Breast Procedures without CC/MCC	09
628	Other Endocrine, Nutritional and Metabolic O.R. Procedures with MCC	10
629	Other Endocrine, Nutritional and Metabolic O.R. Procedures with CC	10
630	Other Endocrine, Nutritional and Metabolic O.R. Procedures without CC/MCC	10
673	Other Kidney and Urinary Tract Procedures with MCC	11
674	Other Kidney and Urinary Tract Procedures with CC	11
675	Other Kidney and Urinary Tract Procedures without CC/MCC	11
802	Other O.R. Procedures of the Blood and Blood Forming Organs with MCC	16
803	Other O.R. Procedures of the Blood and Blood Forming Organs with CC	16
804	Other O.R. Procedures of the Blood and Blood Forming Organs without CC/MCC	16

Convert to ICD-9-PCS

The following crosswalk between ICD-10-PCS to ICD-9-PCS is based based on the General Equivalence Mappings (GEMS) information:

ICD-9-PCS: 4011 (Approximate Flag) Approximate Flag
The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.

Other ICD-10-PCS Codes Used for Drainage Cisterna Chyli

Filter related codes list:

What is ICD-10-PCS?

The ICD-10 Procedure Coding System (ICD-10-PCS) is a catalog of procedural codes used by medical professionals for hospital inpatient healthcare settings. The Centers for Medicare and Medicaid Services (CMS) maintain the catalog in the U.S. releasing yearly updates. The 2025 ICD-10-PCS codes are to be used for discharges occurring from October 1, 2024 through September 30, 2025.

Each ICD-10-PCS code has a structure of seven alphanumeric characters and contains no decimals. The first character defines the major "section". Depending on the "section" the second through seventh characters mean different things.