Medical Information Form (MEDIF)

About the In-Flight Environment

Aircraft cruise in the stratosphere at an altitude of 9,000 to 12,000 meters. Although the cabin is adjusted with pressurization equipment, the atmospheric pressure and oxygen concentration differ from those on the ground, which may affect you depending on your physical condition.

When atmospheric pressure drops, gases in the body expand. Gases that are not (or cannot be) expelled from the body will expand during the flight, potentially compressing affected areas or internal organs, which can cause pain or difficulty breathing. In addition, as atmospheric pressure drops, the partial pressure of oxygen in the cabin (the oxygen pressure in the air) also drops to about 70-80% of that on the ground. Respiratory, cardiac, and cerebrovascular disorders, as well as severe anemia, are all affected by this decrease in oxygen concentration. A lack of oxygen can also have adverse effects on women in the late stages of pregnancy and newborns.

Customers who fall under the following categories should undergo a health checkup before traveling and consult their attending physician in advance regarding their fitness for air travel:

Customers using medical oxygen cylinders
Customers using Portable Oxygen Concentrators (POCs) or ventilators
Customers using stretchers or incubators
Other customers deemed by ANA to require assistance

Conditions Requiring a Medical Certificate

In principle, customers in the following conditions are not fit to travel by aircraft.However, if your medical condition or physical state is stable and a physician determines and certifies that you are fit to fly using a "Medical Certificate" or similar document, you may be permitted to board. Please consult with us in advance.

Patients with severe cardiac disease, severe heart failure, or cyanotic heart disease (generally unfit within 6 weeks of onset).
Unstable angina or acute myocardial infarction (generally unfit within 2 weeks of onset).
Patients with severe respiratory disease, severe respiratory failure, severe chronic obstructive pulmonary disease (COPD), or patients with recent pneumothorax whose lungs are not fully expanded.
Those with repeated hemoptysis.
Patients in the acute phase of stroke (generally unfit within 4 weeks of onset).
Patients with head disorders causing increased intracranial pressure.
Patients with severe anemia.
Patients with hematemesis, melena, or intestinal obstruction.
Patients with severe otitis media.
Those whose wounds are not fully healed (such as from head, chest, or abdominal surgery) and those who have recently given birth.
Patients with alcohol or other intoxication whose symptoms are unstable.
Those with air or other gases remaining in the body after surgery, such as eye surgery.
Pregnant women within 28 days of their expected delivery date.
(If boarding within 14 days including the expected delivery date, presentation of a "Medical Certificate" issued within 7 days including the boarding date is required.)
Newborn infants within 7 days of birth.
Those who fall within the suspension period for infectious diseases specified by the School Health and Safety Act.

Disease	Period during which Attendance is Prohibited
COVID-19	Until 5 days have passed after onset, and 1 day have passed after become less severe
Influenza	Until 5 days have passed after onset, and 2 days have passed after the temperature has dropped
Whooping cough	Until the characteristic cough has suppressed, or until the treatment with antibiotics has ended
Measles	Until 3 days have passed after the temperature has dropped
Mumps	Until 5 days have passed after onset of the swelling on parotid, submandibular, and sublingual gland
Rubella	Until eruption disappears
Chickenpox	Until all eruptions change to scabs
Pharyngoconjunctival fever	Until 2 days have passed after the main symptom disappears
Tuberculosis, Meningococcal meningitis, Epidemic keratoconjunctivitis, etc.	Until a physician confirms that there is no risk of infection anymore

How to Prepare and Submit Your Medical Certificate

STEP 1. Download the medical certificate (PDF) to your computer.
STEP 2. Enter your information directly into the PDF form (or print it out and fill it in by hand).
STEP 3. Send the completed form to the ANA Disability Desk by email or fax.

Medical Information Form (MEDIF) (Japanese)

Medical Information Form (MEDIF) (English)

Important Information Regarding the Medical Certificate

The medical certificate consists of 4 sections:

Pages 1 and 2: Instructions and reference materials.
Page 3 ("Necessary Arrangements for Boarding"): To be completed by the customer.
Page 4 ("Medical Certificate"): To be completed by the attending physician.

The medical certificate is valid if issued by a physician within 14 days, including the date of departure. For customers whose medical condition or symptoms are stable, a validity period can be specified on the certificate. As long as your boarding date falls within this validity period, we will accept the medical certificate even if it was issued more than 14 days prior. Please keep the valid medical certificate with you.

(Example) If your boarding date is December 15, a medical certificate issued on or after December 2 is valid.

For round-trip travel:
Please check the box regarding fitness to travel on the return flight and fill in your return flight schedule on the medical certificate. If this information is provided, the certificate will be valid for your return flight even if it falls outside the standard 14-day window.

Request for Advance Confirmation

To ensure a smooth boarding process on the day of your flight, please send your medical certificate in advance by fax or email to the ANA Disability Desk.If there is any missing or incomplete information, our staff will contact you. Therefore, please allow plenty of time and send it a few days prior to your departure. If advance confirmation cannot be completed by the ANA Disability Desk, please bring the medical certificate to the airport on the day of your flight and present it during the check-in process.