ICD-10-CM > M00-M99 > M45-M49 > M48 > M48.4 > M48.42 M48.42 Fatigue fracture of vertebra, cervical region Non-Billable/Non-Specific Codes M48.42XA..., initial encounter for fractureM48.42XD..., subsequent encounter for fracture with routine healingM48.42XG..., subsequent encounter for fracture with delayed healingM48.42XS..., sequela of fracture