ICD10Check
CheckerBrowseOpen

M86

⚠ Non-billable (Header)

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.

Check This Code

❌ Excludes1

direct

Cannot be coded with M86

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

⚠️ Excludes2

direct

May be coded together if both conditions coexist

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

Child Codes (9)

M86.0Acute hematogenous osteomyelitisM86.1Other acute osteomyelitisM86.2Subacute osteomyelitisM86.3Chronic multifocal osteomyelitisM86.4Chronic osteomyelitis with draining sinusM86.5Other chronic hematogenous osteomyelitisM86.6Other chronic osteomyelitisM86.8Other osteomyelitisM86.9Osteomyelitis, unspecified

🧪 Validate Combinations

Add M86 to the Excludes Checker to validate against your full code list.

Open in Checker →

Code Information

CodeM86
BillableNo — Header code
CategoryDiseases of the musculoskeletal system and connective tissue (M00-M99)
Excludes14 rule(s)
Excludes24 note(s)
Child codes9

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)