ICD10 code of Aicardi Syndrome and ICD9 code

Aicardi Syndrome is classified under the ICD-10-CM code Q04.8 (Other specified congenital malformations of brain) and historically fell under ICD-9-CM code 742.8. Because Aicardi Syndrome is an exceptionally rare condition, it does not have its own unique, dedicated code in these systems and is instead categorized under broader neurological congenital malformation codes.

What is the clinical definition of Aicardi Syndrome?

Aicardi Syndrome is a rare, severe neurodevelopmental disorder characterized by the classic triad of agenesis of the corpus callosum, chorioretinal lacunae, and infantile spasms. Almost exclusively affecting females, Aicardi Syndrome is believed to result from a de novo mutation on the X chromosome, making it a sporadic condition rather than an inherited one in the vast majority of cases.

How is Aicardi Syndrome diagnosed?

Diagnosis of Aicardi Syndrome is primarily clinical, based on the presence of the hallmark features identified via physical examination and neuroimaging. Because the condition is rare, specialists often look for specific diagnostic criteria:

• Chorioretinal lacunae: Pathognomonic eye lesions identified during an ophthalmologic exam.


• Brain MRI findings: Complete or partial absence of the corpus callosum.


• Seizure activity: Early-onset infantile spasms, often resistant to conventional anti-epileptic medications.


• EEG patterns: Characteristic "burst-suppression" patterns that help confirm Aicardi Syndrome.

What is the genetic nature of Aicardi Syndrome?

Although the exact gene responsible for Aicardi Syndrome remains unidentified, the X-linked dominant inheritance pattern is strongly suspected. Because it is almost always a new mutation in the affected individual, parents of a child with Aicardi Syndrome are rarely at an increased risk of having another child with the same condition.

Support for those living with Aicardi Syndrome

Managing a complex condition like Aicardi Syndrome requires a multidisciplinary team, including neurologists, ophthalmologists, and physical therapists. At DiseaseMaps.org, 13 people with Aicardi Syndrome have joined our community to share experiences, offering a vital network for families navigating the daily challenges of this rare diagnosis.

Next steps

• Consult a pediatric neurologist for specialized management of seizure activity associated with Aicardi Syndrome.


• Schedule a comprehensive evaluation with a pediatric ophthalmologist to monitor retinal health.


• Join the DiseaseMaps.org community to connect with other families affected by Aicardi Syndrome.


• Visit the NIH GARD website for the most current information on clinical research and support resources.

Medical disclaimer: This information is for educational purposes only and does not constitute medical advice, diagnosis, or treatment; always seek the advice of your physician or other qualified health provider with any questions regarding a medical condition.

References

• NIH GARD: Aicardi Syndrome Overview.


• OMIM: Aicardi Syndrome (Entry #304050).


• Orphanet: Rare disease database for Aicardi Syndrome (ORPHA:36).


• Aicardi Syndrome Foundation: Resources for families and caregivers.