Table 1.

List of ICD-9-CM Codes Included in Each Infection Category, Childhood Autism Perinatal Study, 1995 – 1999

Infection Categories	ICD-9 Codes
Organism-specific Infection Categories
Bacterial infections	001–005, 008.0–008.5, 010–018, 020–027, 030–041, 079.9, 079.98, 080–083,088.0, 090–098, 320–322, 373.11, 424, 461, 481, 482, 483, 537.9, 540,542, 567, 574.00, 575.1, 590, 595, 597, 599.0, 614, 616, 646.5, 647.0, 647.1, 647.3, 658.4, 659.31, 670.02, 681, 682, 684, 686, 795.5, 919.5
Mycoses	110–118
Parasitic infections	006, 007, 084–087, 088.8, 120–129, 130–136, 647.4, 647.8
Viral infections	008.6, 008.8, 042, 045–049, 050–057, 060–066, 070–077, 079.0– 079.89, 079.99, 460, 466, 480, 487, 571.4, 573.1–573.3, 647.5, 647.6
Unknown organism	099.9, 350.2, 351.0, 370.20, 371.00, 372.00, 372.3, 372.30, 373.00, 380.10, 380.23, 381.3, 381.4, 382.9, 462, 463, 464.0, 465.9, 466.0, 472.0, 473.9, 486, 490, 491.9, 528.0, 530.1, 530.10, 533.90, 535.0, 535.00, 535.50, 575.8, 575.9, 597.80, 599.7, 616.0, 616.10, 646.61–646.63, 647.23, 647.81, 647.83, 647.91, 686.9, 730.90
Organ-specific Infection Categories
Cardiovascular	421,422.0, 424
Skin	035, 053, 078.0, 078.1, 110, 111, 117.1, 117.2, 133, 680–682, 684--686,
Ear	380–382
Eye	054.4, 076, 370–373
Gastrointestinal	001–009, 040.2, 041.4, 070, 072 112.0, 123.0, 123.2–123.9, 528.0, 528.1, 528.3, 530.1, 530.2, 531.9, 531–533, 535, 537.9, 540, 542, 570–573, 574.00, 575.0, 575.1, 575.8, 575.9, 577.0, 577.1
Genitourinary	041.6, 054, 078.1, 079.9, 079.98, 098.0–098.3, 112.1, 131.00–131.02, 132.2, 590, 599, 614, 616, 646
Lower Respiratory	010–012, 115, 466,480–487, 490, 491, 795.5
Upper Respiratory	032, 033, 040.1, 041.5, 460–465, 472, 473, 476
Unknown organ	038.0, 038.11, 047.9, 041.04, 041.10, 041.11, 041.19, 041.85, 041.89, 041.9, 052.9, 054.8, 054.9, 079.89, 079.99, 097.1, 099.9, 112.9, 134.9, 350.2, 351.0, 567.2, 647.01, 647.23, 647.61, 647.63, 647.51, 647.81, 647.83, 647.91, 658.41, 659.31, 670.02, 730.90, 919.5, 998.5