Furthermore, the LIGHTNING study also used a definition to specifically capture severe hypoglycaemias, including inpatient/ED, ICD‐9‐CM/ICD‐10‐CM code relating to hypoglycaemic coma, plasma glucose <54 mg/dL, intramuscular glucagon administration, and ‘severe’ mentioned in the EMR.15 Here, GCG is linked to Hypoglycemic coma.