M99.4
⚠ Non-billable (Header)Connective tissue stenosis of neural canal
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 M99.4
Child Codes (10)
M99.40Connective tissue stenosis of neural canal of head regionM99.41Connective tissue stenosis of neural canal of cervical regionM99.42Connective tissue stenosis of neural canal of thoracic regionM99.43Connective tissue stenosis of neural canal of lumbar regionM99.44Connective tissue stenosis of neural canal of sacral regionM99.45Connective tissue stenosis of neural canal of pelvic regionM99.46Connective tissue stenosis of neural canal of lower extremityM99.47Connective tissue stenosis of neural canal of upper extremityM99.48Connective tissue stenosis of neural canal of rib cageM99.49Connective tissue stenosis of neural canal of abdomen and other regions
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CodeM99.4
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)