Renal hypoplasia, bilateral

This code signifies a congenital condition characterized by underdeveloped kidneys on both sides, meaning both kidneys are smaller than normal and contain fewer nephrons. This can lead to impaired renal function and, in severe cases, renal failure.

Assign this code when documentation clearly indicates bilateral renal hypoplasia, a congenital anomaly where both kidneys are abnormally small and underdeveloped. This diagnosis is typically made through imaging studies such as ultrasound or MRI, often identified prenatally or in early childhood.

• Differentiate from renal agenesis (complete absence of a kidney) or renal dysplasia (abnormal development of kidney tissue).
• Always review imaging reports and physician notes for explicit mention of "bilateral" to ensure accurate coding.
• Consider co-occurring congenital anomalies, as renal hypoplasia can be part of broader syndromes.