Table 3. Most prevalent ICD-9 general diagnostic categories by year, region, student sociodemographics, insurance status, and chronic health conditions (n=14,050).

^aV-codes include visits for follow-up exams, well-child checks, and routine child checks.

^bSymptoms include transient conditions and ill-defined conditions in which no diagnosis classification can be made.

^cp<0.001

ICD-9 = International Classification of Diseases, Ninth Revision

ADHD = attention deficit hyperactivity disorder