Answer:
Post operative diagnosis.
Step-by-step explanation:
ICD-10-CM are the diagnosis codes used to determine the disorder, symptoms and poisoning of the disease. These codes are used as a tool for to describe the disease in the form of codes instead of written documents.
Ambulatory surgeries requires the post operative diagnosis because these diagnosis are more definitive than pre operative diagnosis. Post operative diagnosis code is more reliable and helpful for the ambulatory surgery of the patient.
Thus, the answer is post operative diagnosis.