<Tr> <Th_colspan="2"> Classification and external resources </Th> </Tr> <Tr> <Th> Specialty </Th> <Td> immunology </Td> </Tr> <Tr> <Th> ICD - 10 </Th> <Td> D84. 9 </Td> </Tr> <Tr> <Th> ICD - 9 - CM </Th> <Td> 279.3 </Td> </Tr>

Who is considered to have a compromised immune system