National Uniform Claim Committee http://www.nucc.org/

Helpful link, that may help with your CMS-1500 insurance claim form needs.

Starting with Instructions on how to fill out this form to resources that Implement the 1500 claim form.

Who are they? (paragraph credited from the website itself)

The National Uniform Claim Committee (NUCC) is a voluntary organization that replaced the Uniform Claim Form Task Force in 1995.  The committee was created to develop a standardized data set for use by the non-institutional health care community to transmit claim and encounter information to and from all third-party payers. It is chaired by the American Medical Association (AMA), with the Centers for Medicare and Medicaid Services (CMS) as a critical partner. The committee is a diverse group of health care industry stakeholders representing providers, payers, designated standards maintenance organizations, public health organizations, and vendors.