Preoperative Diagnosis: Left zygomatic fracture.
Postoperative Diagnosis: Left zygomatic fracture.
Procedure Performed: Open reduction of left zygomatic fracture.

What is the ICD-10-CM code for the principal diagnosis?
What is the ICD-10-PCS code for the principal procedure?

A) ICD-10-CM: S02.4; ICD-10-PCS: 0RRKXJZ
B) ICD-10-CM: S02.3; ICD-10-PCS: 0RRKXJZ
C) ICD-10-CM: S02.6; ICD-10-PCS: 0RRKXJZ
D) ICD-10-CM: S02.5; ICD-10-PCS: 0RRKXJZ

The correct ICD-10-CM code for the principal diagnosis of a left zygomatic fracture is S02.4, and the correct ICD-10-PCS code for the open reduction procedure is 0RRKXJZ, making Option A the right answer.

Explanation:

The question relates to coding a medical scenario where a patient has undergone surgery for a left zygomatic fracture. In the realm of medical billing and coding, the ICD-10-CM (International Classification of Diseases, Tenth Revision, Clinical Modification) code is used for diagnosis, and the ICD-10-PCS (Procedure Coding System) code is used for hospital inpatient procedures. The primary diagnosis, a left zygomatic fracture, corresponds to the specific anatomy of the facial skeleton, primarily involving the zygomatic arch, a key structure in the contour of the face that can impact both functionality and aesthetics if fractured.

Given the details, the correct ICD-10-CM code for the principal diagnosis of a left zygomatic fracture is S02.4. For the principal procedure, which is an open reduction of the left zygomatic fracture, the corresponding ICD-10-PCS code is 0RRKXJZ. Therefore, the correct answer to the question is Option A: ICD-10-CM: S02.4; ICD-10-PCS: 0RRKXJZ.