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ICD-10-CM Diagnosis Codes →
section notes
17. Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99) →
section notes
Q20-Q28 Congenital malformations of the circulatory system (Q20-Q28) →
section notes
Q23 Congenital malformations of aortic and mitral valves →
section notes
Q23.0   Congenital stenosis of aortic valve
Q23.1   Congenital insufficiency of aortic valve
Q23.2   Congenital mitral stenosis
Q23.3   Congenital mitral insufficiency
Q23.4   Hypoplastic left heart syndrome
Q23.81‑Q23.88   Q23.8 Other congenital malformations of aortic and mitral valves
Q23.9   Congenital malformation of aortic and mitral valves, unsp
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