Short answer · Medically reviewed summary · Last updated: 2026-04-07
TL;DR: Moebius syndrome is classified under ICD-10 code Q87.0 (Congenital malformation syndromes predominantly affecting facial appearance) and ICD-9 code 744.89 (Other specified congenital anomalies of face and neck). These diagnostic codes are used for administrative and insurance purposes to document this rare neurological condition characterized by congenital facial nerve palsy. What is the clinical definition of Moebius syndrome? Moebius syndrome is a rare, non-progressive neurological disorder present at birth.
TL;DR: Moebius syndrome is classified under ICD-10 code Q87.0 (Congenital malformation syndromes predominantly affecting facial appearance) and ICD-9 code 744.89 (Other specified congenital anomalies of face and neck). These diagnostic codes are used for administrative and insurance purposes to document this rare neurological condition characterized by congenital facial nerve palsy.
Moebius syndrome is a rare, non-progressive neurological disorder present at birth. It is primarily defined by the congenital absence or underdevelopment of the sixth (abducens) and seventh (facial) cranial nerves. Individuals living with Moebius syndrome often present with a mask-like facial expression, the inability to move their eyes laterally, and difficulties with feeding or swallowing in infancy. Because Moebius syndrome is a spectrum disorder, the severity of these symptoms varies significantly from person to person, often requiring a multidisciplinary approach to clinical management.
Accurate medical coding is essential for patients navigating the healthcare system. While Moebius syndrome does not have its own unique, dedicated ICD-10 code, it is most commonly captured using the umbrella code Q87.0. In the older ICD-9 system, which is still referenced in some historical medical records, Moebius syndrome was classified under 744.89. Physicians often use these codes in conjunction with secondary codes to describe specific manifestations, such as limb abnormalities or speech delays, which can accompany the primary diagnosis.
The clinical presentation of Moebius syndrome extends beyond facial paralysis. Our community at DiseaseMaps.org, which currently includes 78 members, reports a wide range of experiences. Common clinical features include:
The exact cause of Moebius syndrome remains a subject of ongoing medical research. Most cases are sporadic, meaning they occur randomly without a family history. Current literature suggests that a disruption in the blood supply to the developing brainstem during the first trimester of pregnancy may be a primary factor. While genetic mutations have been identified in a very small subset of cases, there is currently no universal genetic test that confirms a diagnosis of Moebius syndrome; it remains a clinical diagnosis made by pediatric neurologists or geneticists.
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.