099Q0ZZDrainage of Right Maxillary Sinus, Open Approach
- Billable / Specific Code
099Q0ZZ is a billable ICD-10-PCS procedure code for Drainage of Right Maxillary Sinus, Open 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 Drainage involves taking or letting out fluids and/or gases from a body part.
Code Identity
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.
| Position | Designation | Value | Meaning |
|---|---|---|---|
| 1 | Section | 0 | Medical and Surgical |
| 2 | Body System | 9 | Ear, Nose, Sinus |
| 3 | Operation | 9 | Drainage |
| 4 | BodyPart | Q | Maxillary Sinus, Right |
| 5 | Approach | 0 | Open |
| 6 | Device | Z | No Device |
| 7 | Qualifier | Z | No Qualifier |
Convert to ICD-9-PCS
Closest ICD-9-PCS equivalents for 099Q0ZZ under the General Equivalence Mappings.
Similar Procedure Codes
Questions About 099Q0ZZ
Is 099Q0ZZ a billable code?
Yes. 099Q0ZZ is a complete seven-character ICD-10-PCS code, specific enough to report Drainage of Right Maxillary Sinus, Open Approach on inpatient claims from October 1, 2025 through September 30, 2026.
What do the characters in 099Q0ZZ mean?
099Q0ZZ 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 0 is the Approach (Open); the 6th character Z is the Device (No Device); the 7th character Z is the Qualifier (No Qualifier).
What MS-DRG does 099Q0ZZ group to?
On an inpatient stay, Drainage of Right Maxillary Sinus, Open 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 099Q0ZZ?
Under the General Equivalence Mappings, Drainage of Right Maxillary Sinus, Open Approach crosswalks to ICD-9-PCS 22.39. The mapping is approximate, so confirm it fits the documentation.
