M48.51
⚠ Non-billable (Header)Collapsed vertebra, not elsewhere classified, occipito-atlanto-axial region
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 M48.5Rules from parent category M48.5: Collapsed vertebra, not elsewhere classified
- • current injury - see Injury of spine, by body region
- • fatigue fracture of vertebra (M48.4)
- • pathological fracture of vertebra due to neoplasm (M84.58)
- • pathological fracture of vertebra due to other diagnosis (M84.68)
- • pathological fracture of vertebra due to osteoporosis (M80.-)
- • pathological fracture NOS (M84.4-)
- • stress fracture of vertebra (M48.4-)
- • traumatic fracture of vertebra (S12.-, S22.-, S32.-)
Child Codes (4)
M48.51XACollapsed vertebra, not elsewhere classified, occipito-atlanto-axial region, initial encounter for fractureM48.51XDCollapsed vertebra, not elsewhere classified, occipito-atlanto-axial region, subsequent encounter for fracture with routine healingM48.51XGCollapsed vertebra, not elsewhere classified, occipito-atlanto-axial region, subsequent encounter for fracture with delayed healingM48.51XSCollapsed vertebra, not elsewhere classified, occipito-atlanto-axial region, sequela of fracture
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CodeM48.51
BillableNo — Header code
ParentM48.5
CategoryDiseases of the musculoskeletal system and connective tissue (M00-M99)
Excludes18 rule(s)
Excludes20 note(s)
Child codes4
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)