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 9 Contact with and (suspected) exposure to unspecified communicable disease

Z21 Asymptomatic human immunodeficiency virus [HIV] infection status

 * Includes: HIV positive NOS
 * Code first: Human immunodeficiency [HIV] disease complicating pregnancy, childbirth and the puerperium, if applicable (O98.7-)
 * Excludes1: acquired immunodeficiency syndrome (B20)
 * contact with human immunodeficiency virus [HIV] (Z20.6)
 * exposure to human immunodeficiency virus [HIV] (Z20.6)
 * human immunodeficiency virus [HIV] disease (B20)
 * inconclusive laboratory evidence of human immunodeficiency virus [HIV] (R75)

Z22 Carrier of infectious disease

 * Includes: colonization status
 * suspected carrier
 * Z22.0 Carrier of typhoid
 * Z22.1 Carrier of other intestinal infectious diseases
 * Z22.2 Carrier of diphtheria
 * Z22.3 Carrier of other specified bacterial diseases
 * Z22.31 Carrier of bacterial disease due to meningococci
 * Z22.32 Carrier of bacterial disease due to staphylococci
 * Z22.33 Carrier of bacterial disease due to streptococci
 * Z22.330 Carrier of Group B streptococcus
 * Z22.338 Carrier of other streptococcus
 * Z22.39 Carrier of other specified bacterial diseases
 * Z22.4 Carrier of infections with a predominantly sexual mode of transmission
 * Z22.5 Carrier of viral hepatitis
 * Z22.50 Carrier of unspecified viral hepatitis
 * Z22.51 Carrier of viral hepatitis B
 * Hepatitis B surface antigen [HBsAg] carrier
 * Z22.52 Carrier of viral hepatitis C
 * Z22.59 Carrier of other viral hepatitis
 * Z22.6 Carrier of human T-lymphotropic virus type-1 [HTLV-1] infection
 * Z22.8 Carrier of other infectious diseases
 * Z22.9 Carrier of infectious disease, unspecified

Z23 Encounter for immunization

 * Code first any routine childhood examination
 * Note: procedure codes are required to identify the types of immunizations given

==Z28