Question: A 40-year-old patient is trying Botox® for her chronic migraines. According to the policy, what are the symptom parameters that must be documented? Need solution? Get Online Service! A diagnosis of chronic migraines is sufficient. The patient has chronic intractable migraines with status migrainosus. The patient has chronic migraines more than 15 days per month, with headaches lasting 4 hours a day or longer. There are no specific documentation requirements for the use of Botox® for chronic migraines.