M99.8
⚠ Non-billable (Header)Other biomechanical lesions
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.
✅ No additional coding notes for M99.8
Child Codes (10)
M99.80Other biomechanical lesions of head regionM99.81Other biomechanical lesions of cervical regionM99.82Other biomechanical lesions of thoracic regionM99.83Other biomechanical lesions of lumbar regionM99.84Other biomechanical lesions of sacral regionM99.85Other biomechanical lesions of pelvic regionM99.86Other biomechanical lesions of lower extremityM99.87Other biomechanical lesions of upper extremityM99.88Other biomechanical lesions of rib cageM99.89Other biomechanical lesions of abdomen and other regions
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CodeM99.8
BillableNo — Header code
ParentM99
CategoryDiseases of the musculoskeletal system and connective tissue (M00-M99)
Excludes10 rule(s)
Excludes20 note(s)
Child codes10
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)