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M86

Non-billable

Osteomyelitis

M86 is the ICD-10-CM code for Osteomyelitis. It is a non-billable category code — use a more specific child code such as M86.0 for billing.

Status
Header (non-billable)
Chapter
M00-M99
Subcodes
9
Edition
FY2026

M00-M99 Diseases of the musculoskeletal system and connective tissue

What this means — in plain language

MedlinePlus · NIH

Like other parts of the body, bones can get infected. The infections are usually bacterial, but can also be fungal. They may spread to the bone from nearby skin or muscles, or from another part of the body through the bloodstream. People who are at risk for bone infections include those with diabetes , poor circulation, or recent injury to the bone. You may also be at risk if you are having hemodialysis . Symptoms…

Read more about Bone Infections at MedlinePlus ↗

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

Excludes1 — not coded here

  • •osteomyelitis due to:
  • •echinococcus (B67.2)
  • •gonococcus (A54.43)
  • •salmonella (A02.24)

Excludes2 — not included here

  • •ostemyelitis of:
  • •orbit (H05.0-)
  • •petrous bone (H70.2-)
  • •vertebra (M46.2-)

Use additional code

  • •code (B95-B97) to identify infectious agent
  • •code to identify major osseous defect, if applicable (M89.7-)

Frequently asked questions

What is ICD-10 code M86?
M86 is the ICD-10-CM code for "Osteomyelitis". It falls under M00-M99 Diseases of the musculoskeletal system and connective tissue.
Is M86 a billable code?
No — M86 is a non-billable header code. Use a more specific child code (such as M86.0) for billing.
What are the subcodes of M86?
M86 has 9 more specific child codes, including M86.0, M86.1, M86.2.
What is excluded from M86?
Excludes1 (not coded here): osteomyelitis due to:; echinococcus (B67.2); gonococcus (A54.43); salmonella (A02.24).

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

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