M85.079

Billable

Fibrous dysplasia (monostotic), unspecified ankle and foot

M85.079 is the ICD-10-CM code for Fibrous dysplasia (monostotic), unspecified ankle and foot. It is a billable, specific code valid for reimbursement.

Status
Billable
Chapter
M00-M99
Parent
M85.07
Edition
FY2026

M00-M99 Diseases of the musculoskeletal system and connective tissue

What this means — in plain language

MedlinePlus · NIH

Your ankle bone and the ends of your two lower leg bones make up the ankle joint. Your ligaments, which connect bones to one another, stabilize and support it. Your muscles and tendons move it. The most common ankle problems are sprains and fractures (broken bones). A sprain is an injury to the ligaments. It may take a few weeks to many months to heal completely. A fracture is a break in a bone. You can also injure…

Read more about Ankle Injuries and Disorders at MedlinePlus ↗

Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.

No additional coding notes for this code.

Medications indicated for this condition

FDA labeling

Drugs whose FDA labeling lists this condition's category among its indications. Informational only — not a treatment recommendation or medical advice.

Conditions mapped to this code

MedlinePlus · NIH

Plain-language health-topic references grounded in MedlinePlus (NIH/NLM).

Frequently asked questions

What is ICD-10 code M85.079?
M85.079 is the ICD-10-CM code for "Fibrous dysplasia (monostotic), unspecified ankle and foot". It falls under M00-M99 Diseases of the musculoskeletal system and connective tissue.
Is M85.079 a billable code?
Yes — M85.079 is a billable, specific ICD-10-CM code valid for reimbursement.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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