099B3ZZDrainage of Right Mastoid Sinus, Percutaneous Approach

Medical and Surgical›Ear, Nose, Sinus›Drainage
  • Billable / Specific Code
ICD-10-PCS 099B3ZZ
CMS Source: FY 2026 ICD-10-PCS dataset. Effective Oct 1, 2025 – Sep 30, 2026.FacebookXLinkedInPrint

099B3ZZ is a billable ICD-10-PCS procedure code for Drainage of Right Mastoid Sinus, Percutaneous Approach. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). The root operation Drainage involves taking or letting out fluids and/or gases from a body part.

Code Identity

ICD-10-PCS Code
099B3ZZ
Billable Status
Yes — Valid for Submission
Code Describes
Drainage of Right Mastoid Sinus, Percutaneous Approach
Parent Code
099
Short Description
Drainage of Right Mastoid Sinus, Percutaneous Approach

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
3Operation9Drainage
4BodyPartBMastoid Sinus, Right
5Approach3Percutaneous
6DeviceZNo Device
7QualifierZNo Qualifier

Convert to ICD-9-PCS

Closest ICD-9-PCS equivalents for 099B3ZZ under the General Equivalence Mappings.

99.99
Approximate match.

Code History

Replaced in the FY 2026 code set by:
  • 099B7ZZ — Drainage of Right Mastoid Sinus, Via Opening

Similar Procedure Codes

Questions About 099B3ZZ

Is 099B3ZZ a billable code?

Yes. 099B3ZZ is a complete seven-character ICD-10-PCS code, specific enough to report Drainage of Right Mastoid Sinus, Percutaneous Approach on inpatient claims from October 1, 2025 through September 30, 2026.

What do the characters in 099B3ZZ mean?

099B3ZZ 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 9 is the Operation (Drainage); the 4th character B is the BodyPart (Mastoid Sinus, Right); the 5th character 3 is the Approach (Percutaneous); the 6th character Z is the Device (No Device); the 7th character Z is the Qualifier (No Qualifier).

What is the ICD-9-PCS equivalent of 099B3ZZ?

Under the General Equivalence Mappings, Drainage of Right Mastoid Sinus, Percutaneous Approach crosswalks to ICD-9-PCS 99.99. The mapping is approximate, so confirm it fits the documentation.