Convert ICD-10 Code O02.81 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
O02.81 Inapprop chg quantitav hCG in early pregnancy		631.0 Inapp chg hCG early preg

ICD-10 to ICD-9 crosswalk for code O02.81 - inappropriate change in quantitative human chorionic gonadotropin (hcg) in early pregnancy based on the most recent General Equivalence Mappings (GEMS) information.