2025 ICD-10-CM Procedure Code 0NWW35Z

Revision of External Fixation Device in Facial Bone, Percutaneous Approach

ICD-10-PCS Code:: 0NWW35Z
ICD-10-PCS Code for:: Revision of Ext Fix in Facial Bone, Perc Approach
Is Billable?: Yes - Valid for Submission
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0NWW35Z is a billable procedure code used to specify the performance of revision of external fixation device in facial bone, percutaneous approach. The code is valid for the year 2025 for the submission of HIPAA-covered transactions. The procedure code involves correcting, to the extent possible, a portion of a malfunctioning device or the position of a displaced device. Procedure code explanation: revision can include correcting a malfunctioning or displaced device by taking out or putting in components of the device such as a screw or pin adjustment of position of pacemaker lead, recementing of hip prosthesis

Table of Contents

Code Information
PCS Table
Diagnostic Related Groups Mapping
Other Similar Codes

0NWW35Z 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 head and facial bones body system, classified under revision operation. The applicable bodypart for this procedure code is facial bone.

Position	Designation	Character	Label	Procedures Notes
1	Section	0	Medical and Surgical
2	Body System	N	Head and Facial Bones
3	Operation	W	Revision	Involves: Correcting, to the extent possible, a portion of a malfunctioning device or the position of a displaced device Explanation: Revision can include correcting a malfunctioning or displaced device by taking out or putting in components of the device such as a screw or pin Includes: Adjustment of position of pacemaker lead, recementing of hip prosthesis
4	BodyPart	W	Facial Bone
5	Approach	3	Percutaneous	Involves: Entry, by puncture or minor incision, of instrumentation through the skin or mucous membrane and any other body layers necessary to reach the site of the procedure
6	Device	5	External Fixation Device
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.

New 2025 ICD-10-PCS Code

0NWW35Z is new to ICD-10-PCS code set for the FY 2025, effective October 1, 2022.

0NWW35Z 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 0NWW35Z 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

Other ICD-10-PCS Codes Used for Revision Facial Bone

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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.