09CB4ZZExtirpation of Matter from Right Mastoid Sinus, Percutaneous Endoscopic Approach

  • Billable / Specific Code
ICD-10-PCS 09CB4ZZ
CMS Source: FY 2026 ICD-10-PCS dataset. Effective Oct 1, 2025 – Sep 30, 2026.FacebookXLinkedInPrint

09CB4ZZ is a billable ICD-10-PCS procedure code for Extirpation of Matter from Right Mastoid Sinus, Percutaneous Endoscopic Approach. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRGs 135, 136. The root operation Extirpation involves taking or cutting out solid matter from a body part.

Code Identity

ICD-10-PCS Code
09CB4ZZ
Billable Status
Yes — Valid for Submission
Code Describes
Extirpation of Matter from Right Mastoid Sinus, Percutaneous Endoscopic Approach
Parent Code
Short Description
Extirpate of Matter from R Mastoid Sinus, Perc Endo Approac

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
3OperationCExtirpation
4BodyPartBMastoid Sinus, Right
5Approach4Percutaneous Endoscopic
6DeviceZNo Device
7QualifierZNo Qualifier

Convert to ICD-9-PCS

Closest ICD-9-PCS equivalents for 09CB4ZZ under the General Equivalence Mappings.

20.21
Approximate match.
20.22
Approximate match.

Code History

Replaced in the FY 2026 code set by:
  • 09CB8ZZ — Extirpation of Matter from Right Mastoid Sinus, Endo

Similar Procedure Codes

Questions About 09CB4ZZ

Is 09CB4ZZ a billable code?

Yes. 09CB4ZZ is a complete seven-character ICD-10-PCS code, specific enough to report Extirpation of Matter from Right Mastoid Sinus, Percutaneous Endoscopic Approach on inpatient claims from October 1, 2025 through September 30, 2026.

What do the characters in 09CB4ZZ mean?

09CB4ZZ 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 C is the Operation (Extirpation); the 4th character B is the BodyPart (Mastoid Sinus, Right); the 5th character 4 is the Approach (Percutaneous Endoscopic); the 6th character Z is the Device (No Device); the 7th character Z is the Qualifier (No Qualifier).

What MS-DRG does 09CB4ZZ group to?

On an inpatient stay, Extirpation of Matter from Right Mastoid Sinus, Percutaneous Endoscopic Approach maps to MS-DRGs 135, 136, with relative weights from 1.0153 to 2.1152. The MS-DRG sets the fixed Medicare payment for the stay.

What is the ICD-9-PCS equivalent of 09CB4ZZ?

Under the General Equivalence Mappings, Extirpation of Matter from Right Mastoid Sinus, Percutaneous Endoscopic Approach crosswalks to ICD-9-PCS 20.21 and 20.22. The mapping is approximate, so confirm it fits the documentation.