ICD-10-CM > Z00-Z99 > Z18-Z18 > Z18 > Z18.1 Z18.1 Retained metal fragments Non-Billable/Non-Specific Type 1 Excludes retained radioactive metal fragments (Z18.01-Z18.09) Codes Z18.10Retained metal fragments, unspecifiedZ18.11Retained magnetic metal fragmentsZ18.12Retained nonmagnetic metal fragments