Your insurance number is printed on the front of your insurance card. This number also corresponds to your CERNid and consists of 5 or 6 characters, plus an extension:

CERNid followed by .0 = Principal Member (xxxxxx.0)

CERNid followed by .20 = Spouse (xxxxxx.20)

CERNid followed by .1 = 1st child (xxxxxx.1)

CERNid followed by .2 = 2nd child (xxxxxx.2)

CERNid followed by .3 = 3rd child (xxxxxx.3) ...

You can also find your CERNid on your CERN access card above the expiration date.

Acupuncture is part of the alternative therapies recognised by the CHIS as well as Chinese medicine, chiropractic medicine, osteopathy and etiopathy; provided that it is dispensed by healthcare provider recognised for this specific treatment.

In order to be recognised by the CHIS, the healthcare provider used by the Members must be recognised, qualified and licensed to practice medicine and/or to provide the healthcare or medical treatment concerned by the competent national authorities of the country where they operate. 

Initially, ask for an explanation from UNIQA or from the CERN Administration, depending on who made the challenged decision.
If you are not satisfied by the explanation, try to reach an amicable settlement of the dispute in accordance with the provisions of Chapter XIV section 2 of the CHIS Rules.
Only if the procedure of amicable settlement has failed, can an appeal procedure be opened.

The procedure for settlement of dispute is detailed in Chapter XIV of the CHIS Rules.

General Reimbursement Rule defines the reimbursement rates according to the costs borne by the insured member* (referred to hereinafter by the French acronym FCA) cumulated by the Member over a calendar year. 
Reimbursement rates are the following: