2026
ICD-10-CM
Diagnosis
Code

Q21.9 Congenital malformation of cardiac septum, unspecified

  • Billable
  • POA Exempt
  • 2016–2026

Q21.9 is a billable/specific and POA-exempt diagnosis code from the 2026 ICD-10-CM used to classify the following condition: Congenital malformation of cardiac septum, unspecified.

Inclusion term

  • Septal (heart) defect NOS

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