099D0ZXDrainage of Right Inner Ear, Open Approach, Diagnostic

Medical and Surgical›Ear, Nose, Sinus›Drainage
  • Billable / Specific Code
ICD-10-PCS 099D0ZX
CMS Source: FY 2026 ICD-10-PCS dataset. Effective Oct 1, 2025 – Sep 30, 2026.FacebookXLinkedInPrint

099D0ZX is a billable ICD-10-PCS procedure code for Drainage of Right Inner Ear, Open Approach, Diagnostic. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRGs 143, 144, 145. The root operation Drainage involves taking or letting out fluids and/or gases from a body part.

Code Identity

ICD-10-PCS Code
099D0ZX
Billable Status
Yes — Valid for Submission
Code Describes
Drainage of Right Inner Ear, Open Approach, Diagnostic
Parent Code
099
Short Description
Drainage of Right Inner Ear, Open Approach, Diagnostic

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
4BodyPartDInner Ear, Right
5Approach0Open
6DeviceZNo Device
7QualifierXDiagnostic

Convert to ICD-9-PCS

Closest ICD-9-PCS equivalents for 099D0ZX under the General Equivalence Mappings.

20.32
Approximate match.

Code History

Replaced in the FY 2026 code set by:
  • 099D7ZX — Drainage of Right Inner Ear, Via Opening, Diagn
  • 099D8ZX — Drainage of Right Inner Ear, Endo, Diagn

Similar Procedure Codes

Questions About 099D0ZX

Is 099D0ZX a billable code?

Yes. 099D0ZX is a complete seven-character ICD-10-PCS code, specific enough to report Drainage of Right Inner Ear, Open Approach, Diagnostic on inpatient claims from October 1, 2025 through September 30, 2026.

What do the characters in 099D0ZX mean?

099D0ZX 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 D is the BodyPart (Inner Ear, Right); the 5th character 0 is the Approach (Open); the 6th character Z is the Device (No Device); the 7th character X is the Qualifier (Diagnostic).

What MS-DRG does 099D0ZX group to?

On an inpatient stay, Drainage of Right Inner Ear, Open Approach, Diagnostic maps to MS-DRGs 143, 144, 145, with relative weights from 1.2023 to 3.7466. The MS-DRG sets the fixed Medicare payment for the stay.

What is the ICD-9-PCS equivalent of 099D0ZX?

Under the General Equivalence Mappings, Drainage of Right Inner Ear, Open Approach, Diagnostic crosswalks to ICD-9-PCS 20.32. The mapping is approximate, so confirm it fits the documentation.