09010ZZAlteration of Left External Ear, Open Approach
- Billable / Specific Code
09010ZZ is a billable ICD-10-PCS procedure code for Alteration of Left External Ear, Open Approach. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to 12 MS-DRGs. The root operation Alteration involves modifying the anatomic structure of a body part without affecting the function of the body part. In AHRQ's Clinical Classifications Software (CCSR), this procedure falls under Cosmetic procedures.
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 | 0 | Alteration |
| 4 | BodyPart | 1 | External Ear, Left |
| 5 | Approach | 0 | Open |
| 6 | Device | Z | No Device |
| 7 | Qualifier | Z | No Qualifier |
In the ICD-10-PCS Alphabetic Index
These FY 2027 ICD-10-PCS Alphabetic Index entries lead to this code:
To code alteration of the left ear, open the FY 2027 ICD-10-PCS Alphabetic Index at Alteration, then the subterms Ear, Left. The index leads to table 090, where the approach, device and qualifier values shown in the breakdown above complete the seven-character code 09010ZZ.
Clinical Classification (CCSR)
AHRQ groups this procedure code into these clinical categories.
Convert to ICD-9-PCS
Closest ICD-9-PCS equivalents for this code under the General Equivalence Mappings.
Similar Procedure Codes
Questions About 09010ZZ
Is 09010ZZ a billable code?
Yes. This is a complete seven-character ICD-10-PCS code, specific enough to report Alteration of Left External Ear, Open Approach on inpatient claims from October 1, 2026 through September 30, 2027.
What do the characters in 09010ZZ mean?
The code 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 0 is the Operation (Alteration); the 4th character 1 is the BodyPart (External Ear, Left); 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 09010ZZ group to?
On an inpatient stay, Alteration of Left External Ear, Open Approach maps to MS-DRGs 143, 144, 145, 579, 580, 581, 907, 908, 909, 957, 958, 959, with relative weights from 1.2335 to 7.5502. The MS-DRG sets the fixed Medicare payment for the stay.
What is the ICD-9-PCS equivalent of 09010ZZ?
Under the General Equivalence Mappings, Alteration of Left External Ear, Open Approach crosswalks to ICD-9-PCS 18.79 (Other plastic repair of external ear). The mapping is approximate, so confirm it fits the documentation.
