M87
Non-billableOsteonecrosis
M87 is the ICD-10-CM code for Osteonecrosis. It is a non-billable category code — use a more specific child code such as M87.0 for billing.
- Status
- Header (non-billable)
- Chapter
- M00-M99
- Subcodes
- 6
- Edition
- FY2026
M00-M99 Diseases of the musculoskeletal system and connective tissue
What this means — in plain language
MedlinePlus · NIHOsteonecrosis is a disease caused by reduced blood flow to bones in the joints. In people with healthy bones, new bone is always replacing old bone. In osteonecrosis, the lack of blood causes the bone to break down faster than the body can make enough new bone. The bone starts to die and may break down. You can have osteonecrosis in one or several bones. It is most common in the upper leg. Other common sites are…
Read more about Osteonecrosis at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Includes
- •avascular necrosis of bone
Use additional code
- •code to identify major osseous defect, if applicable (M89.7-)
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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