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ICD-10-CM 2027

ICD-10 code for fibula fracture

M84.46

Pathological fracture, tibia and fibula

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Fracture, pathological (pathologic) › fibula”. Page updated September 29, 2026.

About coding fibula fracture

The ICD-10-CM code for fibula fracture is M84.46 (Pathological fracture, tibia and fibula).

Within M84.4 (pathological fracture, not elsewhere classified), M84.46 is specifically for pathological fracture, tibia and fibula. Related codes cover unspecified site (M84.40), shoulder (M84.41), humerus (M84.42), ulna and radius (M84.43), hand and fingers (M84.44), femur and pelvis (M84.45), ankle, foot and toes (M84.47) and other site (M84.48).

Codes in this range require a 7th character: A for initial encounter for fracture, D for subsequent encounter for fracture with routine healing, G for subsequent encounter for fracture with delayed healing, K for subsequent encounter for fracture with nonunion, P for subsequent encounter for fracture with malunion and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

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 fracture ICD-10 codes

What is the ICD-10 code for fibula fracture?

M84.46 — Pathological fracture, tibia and fibula (a header code; report a more specific subcode).

Is M84.46 billable?

No. M84.46 is a header code. Report one of its more specific subcodes instead.