ICD-10-CM > F01-F99 > F80-F89 > F81 F81 Specific developmental disorders of scholastic skills Non-Billable/Non-Specific Codes F81.0Specific reading disorderF81.2Mathematics disorderF81.8Other developmental disorders of scholastic skillsF81.81Disorder of written expressionF81.89Other developmental disorders of scholastic skillsF81.9Developmental disorder of scholastic skills, unspecified