Two groupers have been developed to support the implementation of the hospital-acquired complications (HACs) list. These tools can be used by hospitals, health services and system managers to identify and monitor HACs.

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.