Disorders which involve congenital anomalies are defined with:

• Occurrence (attribute) = Congenital (qualifier value)
• Associated morphology (attribute) = Morphologically abnormal structure (morphologic abnormality) 
• Pathological process (attribute) = Pathological development process (qualifier value)

Therefore, congenital does not need to be represented as the Associated morphology (attribute) target value.  Congenital anomaly morphology concepts usually have non-congenital parents.