Sanfilippo mucopolysaccharidoses

This code represents Sanfilippo syndrome, a rare, inherited metabolic disorder characterized by the body's inability to break down long chains of sugar molecules called heparan sulfate. This leads to the accumulation of these molecules in cells, causing progressive damage to the brain and other organs. It is a type of mucopolysaccharidosis (MPS III).

Use this code for patients diagnosed with any of the four types of Sanfilippo syndrome (MPS IIIA, IIIB, IIIC, or IIID). Documentation should clearly indicate a confirmed diagnosis of Sanfilippo mucopolysaccharidosis, often supported by genetic testing or enzyme assays. This code is appropriate for initial diagnosis and subsequent encounters for management of the condition.

• Do not confuse with other types of mucopolysaccharidoses (e.g., Hurler, Hunter syndromes), which have distinct codes.
• Code any associated neurological, skeletal, or organ system manifestations separately as secondary diagnoses.
• Ensure the medical record specifies "Sanfilippo" to differentiate from other MPS disorders.