ICD-10-CM > M00-M99 > M45-M49 > M48 > M48.4 > M48.44 M48.44 Fatigue fracture of vertebra, thoracic region Non-Billable/Non-Specific Codes M48.44XA..., initial encounter for fractureM48.44XD..., subsequent encounter for fracture with routine healingM48.44XG..., subsequent encounter for fracture with delayed healingM48.44XS..., sequela of fracture