Q23.8
Header — not billableOther congenital malformations of aortic and mitral valves
The ICD-10 code for other congenital malformations of aortic and mitral valves is Q23.8.
Q23.8 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 3 more specific codes below.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •Laterality-specific codes exist for this condition — confirm the affected side is documented.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- Q23.0Congenital stenosis of aortic valve
- Q23.1Congenital insufficiency of aortic valve
- Q23.2Congenital mitral stenosis
- Q23.3Congenital mitral insufficiency
- Q23.4Hypoplastic left heart syndrome
- Q23.9Congenital malformation of aortic and mitral valves, unspecified
- Q23.8Other congenital malformations of aortic and mitral valvesnon-billable header
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 74689Approximate match