0NH64SZInsertion of Hearing Device into Left Temporal Bone, Percutaneous Endoscopic Approach

Medical and Surgical›Head and Facial Bones›Insertion
  • Billable / Specific Code
ICD-10-PCS 0NH64SZ
CMS Source: FY 2027 ICD-10-PCS dataset. Effective Oct 1, 2026 – Sep 30, 2027.FacebookXLinkedInPrint

0NH64SZ is a billable ICD-10-PCS procedure code for Insertion of Hearing Device into Left Temporal Bone, Percutaneous Endoscopic Approach. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRGs 143, 144, 145. The root operation Insertion involves putting in a nonbiological appliance that monitors, assists, performs, or prevents a physiological function but does not physically take the place of a body part. In AHRQ's Clinical Classifications Software (CCSR), this procedure falls under ENT procedures, NEC.

Code Identity

ICD-10-PCS Code
0NH64SZ
Billable Status
Yes — Valid for Submission
Code Describes
Insertion of Hearing Device into Left Temporal Bone, Percutaneous Endoscopic Approach
Short Description
Insert of Hear Dev into L Temporal Bone, Perc Endo Approach
Parent Code
0NH

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.

PositionDesignationValueMeaning
1Section0Medical and Surgical
2Body SystemNHead and Facial Bones
3OperationHInsertion
4BodyPart6Temporal Bone, Left
5Approach4Percutaneous Endoscopic
6DeviceSHearing Device
7QualifierZNo Qualifier

In the ICD-10-PCS Alphabetic Index

These FY 2027 ICD-10-PCS Alphabetic Index entries lead to this code:

Mastoid process
Anatomy or device term that leads here
Bone anchored hearing device
Anatomy or device term that leads here
Petrous part of temporal bone
Anatomy or device term that leads here
Tympanic part of temporal bone
Anatomy or device term that leads here
Zygomatic process of temporal bone
Anatomy or device term that leads here
Insertion of device in, Bone, Temporal, Left
Leads to this code's table
Hearing Device, Insertion of device in, Left
Leads to this code's table

Browse the full ICD-10-PCS Alphabetic Index →

Clinical Classification (CCSR)

AHRQ groups this procedure code into these clinical categories.

ENT017
ENT procedures, NEC
Clinical domain: Ear, Nose, and Throat Procedures

Convert to ICD-9-PCS

Closest ICD-9-PCS equivalents for this code under the General Equivalence Mappings.

20.95
Implantation of electromagnetic hearing device
Approximate match.

Similar Procedure Codes

Questions About 0NH64SZ

Is 0NH64SZ a billable code?

Yes. This is a complete seven-character ICD-10-PCS code, specific enough to report Insertion of Hearing Device into Left Temporal Bone, Percutaneous Endoscopic Approach on inpatient claims from October 1, 2026 through September 30, 2027.

What do the characters in 0NH64SZ mean?

The code breaks down character by character: the 1st character 0 is the Section (Medical and Surgical); the 2nd character N is the Body System (Head and Facial Bones); the 3rd character H is the Operation (Insertion); the 4th character 6 is the BodyPart (Temporal Bone, Left); the 5th character 4 is the Approach (Percutaneous Endoscopic); the 6th character S is the Device (Hearing Device); the 7th character Z is the Qualifier (No Qualifier).

What MS-DRG does 0NH64SZ group to?

On an inpatient stay, Insertion of Hearing Device into Left Temporal Bone, Percutaneous Endoscopic Approach maps to MS-DRGs 143, 144, 145, with relative weights from 1.2335 to 3.8500. The MS-DRG sets the fixed Medicare payment for the stay.

What is the ICD-9-PCS equivalent of 0NH64SZ?

Under the General Equivalence Mappings, Insertion of Hearing Device into Left Temporal Bone, Percutaneous Endoscopic Approach crosswalks to ICD-9-PCS 20.95 (Implantation of electromagnetic hearing device). The mapping is approximate, so confirm it fits the documentation.