ICD-10-CM > Z00-Z99 > Z77-Z99 > Z89 > Z89.5 Z89.5 Acquired absence of leg below knee Non-Billable/Non-Specific Codes Z89.51Acquired absence of leg below kneeZ89.511Acquired absence of right leg below kneeZ89.512Acquired absence of left leg below kneeZ89.519Acquired absence of unspecified leg below kneeZ89.52Acquired absence of kneeZ89.521Acquired absence of right kneeZ89.522Acquired absence of left kneeZ89.529Acquired absence of unspecified knee