Congenital malformations of corpus callosum

This code represents a birth defect characterized by the partial or complete absence of the corpus callosum, the large bundle of nerve fibers connecting the two cerebral hemispheres. This malformation can lead to a range of neurological impairments, including developmental delays, seizures, and cognitive deficits.

Use this code for patients diagnosed with agenesis, hypoplasia, or dysgenesis of the corpus callosum, confirmed by imaging studies such as MRI or ultrasound. It is appropriate for both initial diagnoses and ongoing management of this congenital condition. Documentation should clearly state the specific malformation of the corpus callosum.

• Do not confuse with acquired lesions or atrophy of the corpus callosum; this code is strictly for congenital malformations.
• Consider sequencing this code as a primary diagnosis when it is the main reason for the encounter, especially in pediatric neurology.
• Look for associated congenital anomalies, as malformations of the corpus callosum often occur with other brain or systemic defects, and code them separately.