The ICD-9 code range for DISEASES OF THE DIGESTIVE SYSTEM 520-579 is medical classification list by the World Health Organization (WHO).
ICD-9 Code range (520-579),DISEASES OF THE DIGESTIVE SYSTEM, contains ICD-9 codes for DISEASES OF ORAL CAVITY, SALIVARY GLANDS, AND JAWS, ESOPHAGUS, APPENDICITIS, HERNIA OF ABDOMINAL CAVITY, NONINFECTIOUS ENTERITIS AND COLITIS, OTHER DISEASES OF DIGESTIVE SYSTEM, STOMACH, AND DUODENUM.