Q232027
Non-billable
Congenital malformations of aortic and mitral valves
Q23 is a non-billable ICD-10-CM category (header) code for Congenital malformations of aortic and mitral valves; a more specific code below it is required for claims in the FY2027 code set.
Clinical Notes
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Code Hierarchy
Q23
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Official Guidelines
Chapter 17: Congenital Malformations
Official coding guidelines for Q00-Q99