M86.4
⚠ Non-billable (Header)Chronic osteomyelitis with draining sinus
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)
M86.40Chronic osteomyelitis with draining sinus, unspecified siteM86.41Chronic osteomyelitis with draining sinus, shoulderM86.42Chronic osteomyelitis with draining sinus, humerusM86.43Chronic osteomyelitis with draining sinus, radius and ulnaM86.44Chronic osteomyelitis with draining sinus, handM86.45Chronic osteomyelitis with draining sinus, femurM86.46Chronic osteomyelitis with draining sinus, tibia and fibulaM86.47Chronic osteomyelitis with draining sinus, ankle and footM86.48Chronic osteomyelitis with draining sinus, other siteM86.49Chronic osteomyelitis with draining sinus, multiple sites
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CodeM86.4
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)