2007 ICD-9-CM Procedure 99.42 Vaccination against smallpox 99.42 is a specific code that can be used to specify a procedure 99.42 contains 2 index entries View the full Volume 3 99.* hierarchy Index entries containing 99.42: Immunization -- see also Vaccination smallpox 99.42 Vaccination (prophylactic) (against) 99.59 smallpox 99.42