Can medical insurance reimburse people who fall after drinking?

No, take Beijing as an example.

The Regulations of Beijing Municipality on Basic Medical Insurance has corresponding provisions on this:

Thirtieth basic medical insurance fund shall not pay the following medical expenses:

(a) to see a doctor in a medical institution other than the medical institution designated by me, except for emergency;

(2) purchasing drugs in non-designated retail pharmacies;

(3) Injuries caused by traffic accidents, medical accidents or other liability accidents;

(four) because I take drugs, fight or other illegal acts;

(five) due to suicide, self-mutilation, alcoholism and other reasons to receive treatment;

(6) being treated abroad or in Hongkong, Macao Special Administrative Region or Taiwan Province Province.

Extended data:

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Laws and regulations related to basic medical insurance in Beijing:

Thirty-seventh insured with my basic medical insurance ic card to choose designated medical institutions for medical treatment, designated retail pharmacies to buy medicine. Every time the insured sees a doctor and buys medicine, he uses his basic medical insurance ic card to communicate directly with the designated medical institutions.

Belongs to the individual cash payment part, which is paid directly by the individual to the designated medical institutions or retail pharmacies, and belongs to the payment part of the individual medical account and social pooling medical fund, and is settled by the designated medical institutions or retail pharmacies and social insurance agencies.

Thirty-eighth designated medical institutions and retail pharmacies should strengthen the professional and technical training and professional ethics education for medical personnel and service personnel, formulate and improve the necessary systems, provide quality services, and ensure the quality of medical care and drugs.

Baidu Encyclopedia-"Beijing Basic Medical Insurance Regulations"