In October of 2008, the WCRIBMA announced that the WCRIBMA’s Governing Committee approved the adoption of the NCCI's Medical Data Call. The Medical Data Call requires the reporting of line item detail from medical bills relating to workers' compensation medical payment transactions. The WCRIBMA entered into an agreement with NCCI whereby NCCI will collect the Medical Data Call on behalf of the WCRIBMA. The Medical Data Call began with the collection of medical transactions occurring in the 3rd quarter of 2010, reported by December 31, 2010.

Beginning with 4th Quarter 2020 data, the WCRIBMA will collect Massachusetts jurisdiction state medical transactions. The same WCMED file layouts will be used and submitted through Compensation Data Exchange (CDX). Carrier groups with at least 1% market share on direct written premiums in Massachusetts over the most recent three years are required to submit the Medical Data Call.

See the following MA Circular Letters related to the Medical Data Call: #2106 (issued 10/29/08), #2126 (issued 6/18/09).