2025 ICD-10-CM Procedure Code 009D4ZZ

Drainage of Medulla Oblongata, Percutaneous Endoscopic Approach

ICD-10-PCS Code:: 009D4ZZ
ICD-10-PCS Code for:: Drainage of Medulla Oblongata, Perc Endo Approach
Is Billable?: Yes - Valid for Submission
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009D4ZZ is a billable procedure code used to specify the performance of drainage of medulla oblongata, percutaneous endoscopic approach. 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
Clinical Classification
Diagnostic Related Groups Mapping
Convert to ICD-9-PCS
Other Similar Codes

009D4ZZ 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 central nervous system and cranial nerves body system, classified under drainage operation. The applicable bodypart for this procedure code is medulla oblongata.

Position	Designation	Character	Label	Procedures Notes
1	Section	0	Medical and Surgical
2	Body System	0	Central Nervous System and Cranial Nerves
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	D	Medulla Oblongata	Includes: Myelencephalon
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	Z	No Qualifier	Explanation: The value Z is used for the seventh character to indicate that a specific qualifier does not apply to the procedure.

Clinical Classification

Clinical Category is Other CNS drainage and related procedures
CCSR Category Code: CNS006
Clinical Domain is Central Nervous System Procedures - CNS contains 14 categories that include procedures performed on the central nervous system (brain, spinal cord, and CNS nerves) such as spinal cord decompression, lumbar puncture, and spinal epidural catheter placement.

009D4ZZ 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 009D4ZZ 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
023	Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis with MCC or Chemotherapy Implant or Epilepsy with Neurostimulator	01
024	Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis without MCC	01
025	Craniotomy and Endovascular Intracranial Procedures with MCC	01
026	Craniotomy and Endovascular Intracranial Procedures with CC	01
027	Craniotomy and Endovascular Intracranial Procedures without CC/MCC	01
907	Other O.R. Procedures for Injuries with MCC	21
908	Other O.R. Procedures for Injuries with CC	21
909	Other O.R. Procedures for Injuries without CC/MCC	21

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: 139 (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 Medulla Oblongata

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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.