Skip to content
Dx

ICD-10-CM 2027

ICD-10 code for fibula osteolysis

M89.56

Osteolysis, lower leg

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Osteolysis › fibula”. Page updated September 29, 2026.

About coding fibula osteolysis

The ICD-10-CM code for fibula osteolysis is M89.56 (Osteolysis, lower leg).

Within M89.5 (osteolysis), M89.56 is specifically for osteolysis, lower leg. Related codes cover unspecified site (M89.50), shoulder (M89.51), upper arm (M89.52), forearm (M89.53), hand (M89.54), thigh (M89.55), ankle and foot (M89.57), other site (M89.58) and 1 more.

To report this condition, pick the subcode that matches the documentation: M89.561 (leg), M89.562 (leg) and M89.569 (leg).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Common questions about fibula osteolysis ICD-10 codes

What is the ICD-10 code for fibula osteolysis?

M89.56 — Osteolysis, lower leg (a header code; report a more specific subcode).

Is M89.56 billable?

No. M89.56 is a header code. Report one of its more specific subcodes instead.