Congenital renal cyst, unspecified

This code describes the presence of a congenital renal cyst where the specific type or location of the cyst is not documented. These are fluid-filled sacs that develop in the kidney before birth, often discovered incidentally and typically benign. It indicates a birth defect affecting the kidney's structure.

Use this code when documentation confirms a congenital renal cyst but lacks further specificity regarding its type (e.g., simple, multicystic dysplastic kidney, polycystic kidney disease). This code is appropriate for initial diagnosis or follow-up when the exact nature of the cyst remains undetermined. Supporting documentation includes imaging reports (ultrasound, CT, MRI) or physician notes identifying a congenital renal cyst without additional detail.

• Do not use this code if the documentation specifies a particular type of congenital renal cystic disease (e.g., autosomal dominant polycystic kidney disease, multicystic dysplastic kidney).
• Always seek clarification from the provider if the documentation indicates a congenital renal cyst but lacks the specificity needed to assign a more precise code.
• This code should be sequenced as a primary diagnosis when the congenital renal cyst is the reason for the encounter, or as a secondary diagnosis if it's an incidental finding or comorbidity.