Fig. 4

ICD 10 hospital diagnoses of 11,166 hospitalized patients with AAP. AAP acute abdominal pain; ED emergency department; ICD international classification of disease; ICD 10 A infectious and parasitic diseases; ICD 10 C neoplasms; ICD K diseases of the digestive system; ICD N diseases of the genitourinary system; ICD R symptoms, signs and abnormal clinical and laboratory findings. The category “Other” includes all other ICD 10 diagnoses chapters, each with a frequency of less than 3.8% of all hospitalized patients