Table 2.

Associations between ICD-10 diagnoses and symptom codes for dispatching

Symptom code for dispatch	Related diagnosesa	Nonspecific diagnosesb	Other diagnosesc	No ED contact
“Dyspnea” N = 472	180 (38.1%)	55 (11.7%)	47 (10.0%)	190 (40.3%)
“Seizure” N = 117	68 (58.1%)	8 (6.8%)	23 (19.7%)	18 (15.4%)
“Choking” N = 144	10 (6.9%)	10 (6.9%)	4 (2.8%)	120 (83.3%)

% referring to the proportion of each code

ED Emergency department, ICD International Classification of Diseases

^aICD-10 diagnoses related to the symptom. The full list of related diagnoses is shown in the Additional file 1

^b ICD-10 diagnoses not related to any medical symptom or diagnosis, including R68.1, Z00, Z01, Z02, and Z03. See Additional file 1

^cAll diagnoses other than ^a and ^b