Table 2. Syndromic classification of selected ICD-10 codes and cause of death for unexplained deaths possibly resulting from infectious causes, United States, 2003–2006*.

Syndrome	ICD-10 codes
Gastrointestinal	A04.9, A05.9, A07.9, A08.4, A09, B82.0, B82.9, K29.7, K29.9, K51.9, K65.9, K85.9, R11, R85.5, R85.6, R85.7
Neurologic	A81.9, A83.9, A84.9, A85.2, A86, A87.9, A89, A92.9, A94, G00.9, G03.9, G04.9, G06.2, R29.8, R40.2, R83.5
Respiratory	J01.9, J02.9, J03.9, J06.9, J12.9, J15.9, J18.0, J18.1 J18.2, J18.8, J18.9, J20.9, J21.9, J22, R04.9, R84.5, R84.6, R84.7
Cardiovascular	D59.4, D59.9, D61.9, D64.9, D69.6, I01.9, I30.9, I33.9, I40.9, I42.8, I42.9, I51.4, I77.6, L95.9
Unknown/other	A28.9, A49.8, A49.9, A64, A68.9, A99, B09, B34.9, B49, B64, B83.9, B88.9, B89, B94.9, B99, D73.3, M60.0, N10.9, O98.9, P36.9, P37.9, P39.9, R50.9, R56.8, R59.9, R69, R89.5, R89.6, R89.7, R96.0, R96.1, R98, R99
Sepsis/shock	A41.9, R57.9

*ICD-10, International Classification of Diseases, 10th Revision.