Congenital cerebral cysts

This code represents the presence of abnormal, fluid-filled sacs within the brain that are present at birth. These cysts are a result of developmental anomalies during fetal brain formation, distinct from those caused by injury or disease later in life.

Use this code when documentation clearly indicates a congenital origin for a cerebral cyst. This typically involves imaging studies (e.g., MRI, CT) identifying a cyst and a clinical history consistent with a birth defect, rather than an acquired lesion.

• Differentiate carefully between congenital and acquired cerebral cysts; refer to the Excludes1 note for acquired porencephalic cyst (G93.0).
• Ensure documentation specifies "congenital" or "present at birth" to support the use of this code.
• Consider sequencing this code as a primary diagnosis if it is the reason for the encounter or as a secondary diagnosis if it is a co-morbidity.