The Board denied a rating in excess of 10 percent for amputation of the left great toe and granted a separate 10 percent rating for calluses of the left foot. The amputation was not rated higher due to the absence of removal of the metatarsal head, while the calluses were found to be moderate in severity.

The Board has granted entitlement to TDIU due to the combined effects of service-connected disabilities, including PFB and bilateral foot calluses. The decision is based on the Veteran's credible testimony regarding his inability to work due to these conditions.

The Veteran's left ear hearing loss was not granted a compensable rating.,For the period from March 23, 2017, to April 27, 2018, the Veteran received a maximum schedular rating for IBS under Diagnostic Code 7319. For the period since April 27, 2018, the Veteran's IBS has been manifested by moderate symptomatology with frequent episodes of bowel disturbance.,The Veteran's sinusitis did not meet criteria for an increased rating as it was not characterized by incapacitating episodes or a history of sinus surgery.,The calluses on the bilateral feet were not painful and collectively measured less than 144 sq. in., thus not meeting criteria for an increased rating.,Right and left knee disabilities have been manifested by findings of limitation of flexion resulting in additional functional loss, but did not meet criteria for a higher rating as they are already at the maximum schedular rating under Diagnostic Code 5260.,The Veteran's right knee instability was granted an initial 30 percent rating and left knee instability was granted an initial 10 percent rating based on moderate recurrent lateral instability.,Radiculopathy of the bilateral lower extremities has been rated at 20 percent, consistent with moderate incomplete paralysis of the sciatic nerve.,The Veteran's TMJ disability is related to a service-connected disability and thus granted service connection.,Crohn's Disease was not found to be incurred or aggravated during service.,Respiratory disability and sleep apnea were not found to be incurred or aggravated during service.,Right and left ankle disabilities were not shown in service and are not otherwise related to service.

The Board has remanded the Veteran's claims for service connection for amputation of the left great toe and a left foot hammertoe deformity (toes two through five) as secondary to amputation of the left great toe due to new evidence. The issues have been raised but not fully addressed.

The Veteran's tinea versicolor, affecting 20 to 40 percent of exposed body area, is granted a 30 percent initial rating from August 1, 2012. Other service connection claims are denied.