The HACs are identified using a combination of ICD-10-AM codes to identify the diagnosis and the condition onset flag (METeOR identifier: 354816) to indicate that the diagnosis occurred during the episode of admitted patient care.

Some HACs also require other codes to define the complication such as procedure and external cause codes.

This hospital-acquired complication (HAC) covers falls occurring in hospital which result in a fracture or intracranial injury resulting in diagnoses of intracranial injury, fractured neck of femur or other fractures.