Pediatric Coding Alert

Question: Which ICD9 Codes should I use for increased or decreased head circumference in an infant?

Wisconsin Subscriber

Answer: Because no code exists for this condition, if the pediatrician diagnoses the condition in the perinatal period, you should assign 779.89 (Other specified conditions originating in the perinatal period) for increased head circumference or 783.41 (Failure to thrive) for decreased head size. With more information, you may find a more specific diagnosis. For instance, if the pediatrician notes a congenital anomaly, you should report the code for the condition instead, such as 756.0 (Anomalies of skull and face bones) or 742.3 (Congenital hydrocephalus).