M86.6
⚠ Non-billable (Header)Other chronic osteomyelitis
Diseases of the musculoskeletal system and connective tissue (M00-M99)
⚠️ This is a category header code — not billable. Use a more specific child code below.
❌ Excludes1
inherited from M86Rules from parent category M86: Osteomyelitis
- • osteomyelitis due to:
- • echinococcus (B67.2)
- • gonococcus (A54.43)
- • salmonella (A02.24)
⚠️ Excludes2
inherited from M86Rules from parent category M86: Osteomyelitis
- • ostemyelitis of:
- • orbit (H05.0-)
- • petrous bone (H70.2-)
- • vertebra (M46.2-)
Child Codes (10)
M86.60Other chronic osteomyelitis, unspecified siteM86.61Other chronic osteomyelitis, shoulderM86.62Other chronic osteomyelitis, humerusM86.63Other chronic osteomyelitis, radius and ulnaM86.64Other chronic osteomyelitis, handM86.65Other chronic osteomyelitis, thighM86.66Other chronic osteomyelitis, tibia and fibulaM86.67Other chronic osteomyelitis, ankle and footM86.68Other chronic osteomyelitis, other siteM86.69Other chronic osteomyelitis, multiple sites
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CodeM86.6
BillableNo — Header code
ParentM86
CategoryDiseases of the musculoskeletal system and connective tissue (M00-M99)
Excludes14 rule(s)
Excludes24 note(s)
Child codes10
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)