The Veteran's appeal is being remanded for additional development, including verification of service in Vietnam and the Philippines, clarification of his theories of entitlement to service connection, and a VA examination to determine the nature and likely etiology of any current respiratory disorder.

The Board has remanded the issues of service connection for bladder cancer, an initial compensable rating for status post right upper lobectomy, service connection for COPD, and an initial rating in excess of 10 percent for coronary artery disease. The decision also includes a matter regarding entitlement to a rating in excess of 10 percent for bilateral pes planus prior to March 11, 2016, and in excess of 30 percent thereafter, including the issue of TDIU.

The Board has found that another remand is required to obtain an addendum opinion addressing whether the Veteran's respiratory disability, including OSA and other conditions, is directly related to service. The issue of entitlement to service connection for a respiratory disability remains under review.

The Board denied service connection for a lung disability (characterized by the RO as thoracotomy, status post left pneumothorax) for accrued benefits purposes due to lack of evidence linking the condition to military service or Agent Orange exposure.

The veteran's residuals of a right upper lobectomy are not manifested by cor pulmonale; or by Forced Expiratory Volume in One Second (FEV-1) less than 56 percent of predicted value; or the ratio of FEV-1 to Forced Vital Capacity (FVC) less than 56 percent; or Diffusion Capacity of the Lung for Carbon Monoxide by the Single Breath Method (DLCO(SB)) less than 56 percent predicted; or a maximum exercise capacity less than 15 ml/kg/min oxygen consumption (with cardiac or respiratory limitation); or right ventricular hypertrophy; or pulmonary hypertension; or episode(s) of acute respiratory failure; or the need for outpatient oxygen therapy.