The article reviews the defects of a statistical classification of urolithiasis in ICD-10. The main defect is the discrepancy of clinical diagnoses in case histories with statistical codes of ICD-10. A new coded classification of urolithiasis reflecting basic clinical characteristics of urolithiasis (a type and size of the stones, function of the kidneys, x-ray positivity and infection of the stones, chemical structure of the stones) is proposed. This coded classification can raise significance of statistical information about urolithiasis and optimize standards of the diagnosis and treatment of this disease.