M85.6
⚠ Non-billable (Header)Other cyst of bone
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
directCannot be coded with M85.6
- • cyst of jaw NEC (M27.4)
- • osteitis fibrosa cystica generalisata [von Recklinghausen's disease of bone] (E21.0)
❌ Excludes1
inherited from M85Rules from parent category M85: Other disorders of bone density and structure
- • osteogenesis imperfecta (Q78.0)
- • osteopetrosis (Q78.2)
- • osteopoikilosis (Q78.8)
- • polyostotic fibrous dysplasia (Q78.1)
Child Codes (10)
M85.60Other cyst of bone, unspecified siteM85.61Other cyst of bone, shoulderM85.62Other cyst of bone, upper armM85.63Other cyst of bone, forearmM85.64Other cyst of bone, handM85.65Other cyst of bone, thighM85.66Other cyst of bone, lower legM85.67Other cyst of bone, ankle and footM85.68Other cyst of bone, other siteM85.69Other cyst of bone, multiple sites
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CodeM85.6
BillableNo — Header code
ParentM85
CategoryDiseases of the musculoskeletal system and connective tissue (M00-M99)
Excludes16 rule(s)
Excludes20 note(s)
Child codes10
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)