Mathematics disorder

This diagnosis code signifies a specific developmental disorder characterized by significant impairment in mathematical abilities that is not attributable to intellectual disability, neurological conditions, or inadequate schooling. Individuals with this disorder struggle with fundamental arithmetic operations, number sense, and mathematical reasoning.

Assign this code when documentation clearly indicates a persistent and significant difficulty with mathematical skills, such as calculation, problem-solving, and understanding mathematical concepts, that interferes with academic or daily functioning. This diagnosis is typically made after comprehensive psychological and educational assessments rule out other causes.

• Differentiate from acquired acalculia (R48.8), which is a loss of mathematical ability due to brain injury or disease, not a developmental disorder.
• Ensure the documentation specifies that the mathematical difficulties are not secondary to a reading or spelling disorder, which would lead to F81.0 or F81.81 respectively.
• Verify that the impairment is not primarily due to inadequate educational opportunities (Z55.8).