ICD-10-CM > Z00-Z99 > Z77-Z99 > Z89 > Z89.4 > Z89.44 Z89.44 Acquired absence of ankle Non-Billable/Non-Specific Applicable To Disarticulation of ankle Codes Z89.441Acquired absence of right ankleZ89.442Acquired absence of left ankleZ89.449Acquired absence of unspecified ankle