ICD-10 Code Q23.9 - Congenital malformation of aortic and mitral valves, unspecified

ICD-10-CM Diagnosis Code Q23.9

Diagnosis Code: Q23.9 (Raw: Q239)

Description: Congenital malformation of aortic and mitral valves, unspecified

Classification: International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM)

Fiscal Year: 2026

CMS Section 111 Status: Valid for reporting.

Overview & Clinical Details

ICD-10-CM code Q23.9 is designated for Congenital malformation of aortic and mitral valves, unspecified. In medical documentation and insurance billing, this code is utilized to specify medical diagnosis for patient records, reimbursement workflows, and compliance under CMS Section 111 mandatory insurer reporting guidelines.