Japan Shakai Hoken

I recently read that visa renewals in Japan can be denied if there are unpaid social insurance (shakai hoken) contributions. I believe I may owe a small balance of less than 10,000 yen, and I would like to resolve this promptly.

Does anyone know how I can confirm the exact amount owed and the proper way to make payment? I want to ensure that there are no outstanding issues that could affect my visa application to move back to Japan in January. I live in the US and the insurance bill would have been from 2012-13.

by TheBestCoroner