ICD-10-CM > M00-M99 > M45-M49 > M48 > M48.4 > M48.48 M48.48 Fatigue fracture of vertebra, sacral and sacrococcygeal region Non-Billable/Non-Specific Codes M48.48XA..., initial encounter for fractureM48.48XD..., subsequent encounter for fracture with routine healingM48.48XG..., subsequent encounter for fracture with delayed healingM48.48XS..., sequela of fracture