Mass. Gen. Laws ch. 175 § 11
In addition to the reserve provided for in sections 9 and 10, the commissioner shall charge to each company the liabilities, and allow to the credit of each company in the account of its financial condition only the assets, as are chargeable or allowable, respectively, under accounting practices and procedures prescribed or allowed by the commissioner. Notwithstanding any general or special law to the contrary, the commissioner shall require that value of the liabilities and assets be computed in accordance with the Annual Statement Instructions and Accounting Practices and Procedures Manual adopted by the National Association of Insurance Commissioners, unless modified by the commissioner as the commissioner considers appropriate.
Mass. Gen. Laws ch. 175, § 11