ICD-10-CM > Q00-QA0 > Q00-Q07 > Q04 > Q04.9 Q04.9 Congenital malformation of brain, unspecified Billable/Specific Copy Code Copy Description Applicable To Congenital anomaly NOS of brainCongenital deformity NOS of brainCongenital disease or lesion NOS of brainMultiple anomalies NOS of brain, congenital