Final answer:
Ambulance charges are added to the Medicare inpatient claim in specific circumstances, such as for emergency medical conditions or when medically necessary.
Step-by-step explanation:
When a hospital adds ambulance charges to the Medicare inpatient claim depends on the specific circumstances. Generally, ambulance charges are added to the Medicare inpatient claim when a patient is transported by ambulance for an emergency medical condition or when it is medically necessary. For example, if a patient is admitted to the hospital due to a heart attack and is transported by ambulance, the ambulance charges will be included in the Medicare inpatient claim.