ICD-10-CM > Z00-Z99 > Z77-Z99 > Z79 > Z79.8 > Z79.81 > Z79.811 Z79.811 Long term (current) use of aromatase inhibitors Billable/Specific Copy Code Copy Description Applicable To Long term (current) use of anastrozole (Arimidex)Long term (current) use of exemestane (Aromasin)Long term (current) use of letrozole (Femara)