09QC8ZZRepair Left Mastoid Sinus, Via Natural or Artificial Opening Endoscopic

Medical and Surgical›Ear, Nose, Sinus›Repair
  • Billable / Specific Code
ICD-10-PCS 09QC8ZZ
CMS Source: FY 2027 ICD-10-PCS dataset. Effective Oct 1, 2026 – Sep 30, 2027.FacebookXLinkedInPrint

09QC8ZZ is a billable ICD-10-PCS procedure code for Repair Left Mastoid Sinus, Via Natural or Artificial Opening Endoscopic. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRGs 135, 136. The root operation Repair involves restoring, to the extent possible, a body part to its normal anatomic structure and function. In AHRQ's Clinical Classifications Software (CCSR), this procedure falls under ENT repair.

Code Identity

ICD-10-PCS Code
09QC8ZZ
Billable Status
Yes — Valid for Submission
Code Describes
Repair Left Mastoid Sinus, Via Natural or Artificial Opening Endoscopic
Short Description
Repair Left Mastoid Sinus, Endo
Parent Code
09Q

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 System9Ear, Nose, Sinus
3OperationQRepair
4BodyPartCMastoid Sinus, Left
5Approach8Via Natural or Artificial Opening Endoscopic
6DeviceZNo Device
7QualifierZNo Qualifier

In the ICD-10-PCS Alphabetic Index

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

Incudopexy
Leads to this code's table
Mastoid air cells
Anatomy or device term that leads here
Repair, Sinus, Mastoid, Left
Leads to this code's table

To code repair of the left mastoid sinus, open the FY 2027 ICD-10-PCS Alphabetic Index at Repair, then the subterms Sinus, Mastoid, Left. The index leads to table 09Q, where the approach, device and qualifier values shown in the breakdown above complete the seven-character code 09QC8ZZ.

Browse the full ICD-10-PCS Alphabetic Index →

Clinical Classification (CCSR)

AHRQ groups this procedure code into these clinical categories.

ENT013
ENT repair
Clinical domain: Ear, Nose, and Throat Procedures

Code History

Replaces previously assigned code(s):
  • 09QC4ZZ — Repair Left Mastoid Sinus, Percutaneous Endoscopic Approach
Replaced in the FY 2027 code set by:
  • 09UC77Z — Supplement Left Mastoid Sinus with Autol Sub, Via Opening
  • 09UC7JZ — Supplement Left Mastoid Sinus with Synth Sub, Via Opening
  • 09UC7KZ — Supplement Left Mastoid Sinus with Nonaut Sub, Via Opening
  • 09UC87Z — Supplement Left Mastoid Sinus with Autol Sub, Endo
  • 09UC8JZ — Supplement Left Mastoid Sinus with Synth Sub, Endo
  • 09UC8KZ — Supplement Left Mastoid Sinus with Nonaut Sub, Endo

Similar Procedure Codes

Questions About 09QC8ZZ

Is 09QC8ZZ a billable code?

Yes. This is a complete seven-character ICD-10-PCS code, specific enough to report Repair Left Mastoid Sinus, Via Natural or Artificial Opening Endoscopic on inpatient claims from October 1, 2026 through September 30, 2027.

What do the characters in 09QC8ZZ mean?

The code breaks down character by character: the 1st character 0 is the Section (Medical and Surgical); the 2nd character 9 is the Body System (Ear, Nose, Sinus); the 3rd character Q is the Operation (Repair); the 4th character C is the BodyPart (Mastoid Sinus, Left); the 5th character 8 is the Approach (Via Natural or Artificial Opening Endoscopic); the 6th character Z is the Device (No Device); the 7th character Z is the Qualifier (No Qualifier).

What MS-DRG does 09QC8ZZ group to?

On an inpatient stay, Repair Left Mastoid Sinus, Via Natural or Artificial Opening Endoscopic maps to MS-DRGs 135, 136, with relative weights from 1.0615 to 2.1793. The MS-DRG sets the fixed Medicare payment for the stay.