Convert ICD-10 Code Z18.31 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
Z18.31 Retained animal quills or spines		V90.31 Retained quills/spines

ICD-10 to ICD-9 crosswalk for code Z18.31 - retained animal quills or spines based on the most recent General Equivalence Mappings (GEMS) information.