2007 ICD-9-CM Procedure 99.16 Injection of antidote 99.16 is a specific code that can be used to specify a procedure 99.16 contains 4 index entries View the full Volume 3 99.* hierarchy 99.16 also known as: Injection of: antivenin heavy metal antagonist Index entries containing 99.16: Injection (into) (hypodermically) (intramuscularly) (intravenously) (acting locally or systemically) antidote NEC 99.16 antivenin 99.16 heavy metal antagonist 99.16 Transfusion (of) 99.03 antivenin 99.16