099Q4ZXDrainage of Right Maxillary Sinus, Percutaneous Endoscopic Approach, Diagnostic

Medical and Surgical›Ear, Nose, Sinus›Drainage
  • Billable / Specific Code
ICD-10-PCS 099Q4ZX
CMS Source: FY 2026 ICD-10-PCS dataset. Effective Oct 1, 2025 – Sep 30, 2026.FacebookXLinkedInPrint

099Q4ZX is a billable ICD-10-PCS procedure code for Drainage of Right Maxillary Sinus, Percutaneous Endoscopic Approach, Diagnostic. 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
099Q4ZX
Billable Status
Yes — Valid for Submission
Code Describes
Drainage of Right Maxillary Sinus, Percutaneous Endoscopic Approach, Diagnostic
Parent Code
099
Short Description
Drainage of Right Maxillary Sinus, Perc Endo Approach, Diag

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
4BodyPartQMaxillary Sinus, Right
5Approach4Percutaneous Endoscopic
6DeviceZNo Device
7QualifierXDiagnostic

Convert to ICD-9-PCS

Closest ICD-9-PCS equivalents for 099Q4ZX under the General Equivalence Mappings.

22.11
Approximate match.

Code History

Replaced in the FY 2026 code set by:
  • 099Q8ZX — Drainage of Right Maxillary Sinus, Endo, Diagn

Similar Procedure Codes

Questions About 099Q4ZX

Is 099Q4ZX a billable code?

Yes. 099Q4ZX is a complete seven-character ICD-10-PCS code, specific enough to report Drainage of Right Maxillary Sinus, Percutaneous Endoscopic Approach, Diagnostic on inpatient claims from October 1, 2025 through September 30, 2026.

What do the characters in 099Q4ZX mean?

099Q4ZX 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 Q is the BodyPart (Maxillary Sinus, Right); the 5th character 4 is the Approach (Percutaneous Endoscopic); the 6th character Z is the Device (No Device); the 7th character X is the Qualifier (Diagnostic).

What is the ICD-9-PCS equivalent of 099Q4ZX?

Under the General Equivalence Mappings, Drainage of Right Maxillary Sinus, Percutaneous Endoscopic Approach, Diagnostic crosswalks to ICD-9-PCS 22.11. The mapping is approximate, so confirm it fits the documentation.