ICD-10-CM > M00-M99 > M86-M90 > M89 > M89.3 > M89.36 M89.36 Hypertrophy of bone, tibia and fibula Non-Billable/Non-Specific Codes M89.361Hypertrophy of bone, right tibiaM89.362Hypertrophy of bone, left tibiaM89.363Hypertrophy of bone, right fibulaM89.364Hypertrophy of bone, left fibulaM89.369Hypertrophy of bone, unspecified tibia and fibula