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M86.9

✓ Billable

Osteomyelitis, unspecified

Diseases of the musculoskeletal system and connective tissue (M00-M99)

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Also Known As

Infection of bone NOSPeriostitis without osteomyelitis

❌ Excludes1

inherited from M86

Rules from parent category M86: Osteomyelitis

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

⚠️ Excludes2

inherited from M86

Rules from parent category M86: Osteomyelitis

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

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Code Information

CodeM86.9
BillableYes
ParentM86
CategoryDiseases of the musculoskeletal system and connective tissue (M00-M99)
Excludes14 rule(s)
Excludes24 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)