Possession of an ID card alone (DD 2 (Retired), PHS-1866-3 (Retired), or DD 1173 (Uniformed Services Identification and Privilege Card)) does not constitute sufficient proof of eligibility. Accordingly, a DEERS check will be instituted per Sec. 728.4 (cc) before medical and dental care may be rendered except in emergencies. When required inpatient or outpatient care is beyond the capabilities of the naval MTF, the provisions of Sec. 728.34 apply. When required inpatient care cannot be rendered and a decision is made to disengage a CHAMPUS-eligible beneficiary, the provisions of Sec. 728.33 apply.