Massachusetts General Laws Part I. Administration of the Government (Ch. 1-182) Ch. 38, § 3

(1) death where criminal violence appears to have taken place, regardless of the time interval between the incident and death, and regardless of whether such violence appears to have been the immediate cause of death, or a contributory factor thereto;

(2) death by accident or unintentional injury, regardless of time interval between the incident and death, and regardless of whether such injury appears to have been the immediate cause of death, or a contributory factor thereto;

(3) suicide, regardless of the time interval between the incident and death;

(4) death under suspicious or unusual circumstances;

(5) death following an unlawful abortion;

(6) death related to occupational illness or injury;

(7) death in custody, in any jail or correctional facility, or in any mental health or mental retardation institution;

(8) death where suspicion of abuse of a child, family or household member, older adult or person with a disability exists;

(9) death due to poison or acute or chronic use of drugs or alcohol;

(10) skeletal remains;

(11) death associated with diagnostic or therapeutic procedures;

(12) sudden death when the decedent was in apparent good health;

(13) death in any public or private conveyance;

(14) fetal death, as defined in section 202 of chapter 111, where the period of gestation has been 20 weeks or more or where fetal weight is 350 grams or more;

(15) death of children under the age of 18 years from any cause;

(16) any person found dead;

(17) death in an emergency treatment facility, medical walk-in center, child care center or under foster care; or

(18) deaths occurring under such other circumstances as the chief medical examiner shall prescribe in regulations promulgated pursuant to chapter 30A.

A physician, police officer, hospital administrator, licensed nurse, department of children and families social worker, or licensed funeral director, within the commonwealth, who, having knowledge of such an unreported death, fails to notify the office of the chief medical examiner of such death shall be punished by a fine of not more than five hundred dollars. Such failure shall also be reported to the appropriate board of registration, where applicable.