Q23.9 – Congenital malformation of aortic and mitral valves, unspecified
ICD-10-CM 2027 diagnosis code · Congenital malformations of the circulatory system
ICD-10-CM code
Q23.9
- Code
Q23.9(claims format:Q239)- Description
- Congenital malformation of aortic and mitral valves, unspecified
- Short description
- Congenital malformation of aortic and mitral valves, unsp
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 17. Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1)
- Block
- Q20-Q28 Congenital malformations of the circulatory system
- Parent codes
- Q23
Index terms for Q23.9
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in Q23
- Q23.0 – Congenital stenosis of aortic valveBillable
- Q23.1 – Congenital insufficiency of aortic valveBillable
- Q23.2 – Congenital mitral stenosisBillable
- Q23.3 – Congenital mitral insufficiencyBillable
- Q23.4 – Hypoplastic left heart syndromeBillable
- Q23.8 – Other congenital malformations of aortic and mitral valvesHeader
Frequently asked questions
What is ICD-10 code Q23.9?
Q23.9 is the ICD-10-CM code for congenital malformation of aortic and mitral valves, unspecified, in the block Q20-Q28 (Congenital malformations of the circulatory system).
Is Q23.9 a billable code?
Yes. Q23.9 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does Q23.9 belong to?
It belongs to category Q23 – Congenital malformations of aortic and mitral valves.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.