As used in this chapter, the following words shall, unless the context clearly requires otherwise, have the following meanings: [unchanged text not shown] “Emergency services”, services to treat a medical condition, whether physical or mental, manifesting itself by symptoms of sufficient severity, including severe pain, that the absence of prompt medical attention could reasonably be expected by a prudent layperson who possesses an average knowledge of health and medicine, to result in placing the health of an insured or another person in serious jeopardy, serious impairment to body function, or serious dysfunction of any body organ or part, or, with respect to a pregnant woman, as further defined in § 1867(e)(l)(B) [FN1] of the Social Security Act, 42 U.S.C. 1395dd(e)(1)(B).

“Health plan”, any individual, general, blanket or group policy of health, accident and sickness insurance issued by an insurer licensed under chapter 175; a group hospital service plan issued by a nonprofit hospital service corporation under chapter 176A; a group medical service plan issued by a non profit medical service corporation under chapter 176B; a group health maintenance contract issued by a health maintenance organization under chapter 176G; provided, however, “health plan” shall not include accident only, credit-only, limited scope vision or dental benefits if offered separately, hospital indemnity insurance policies if offered as independent, non-coordinated benefits which under this chapter shall mean policies issued under chapter 175 which provide a benefit not to exceed $500 per day, as adjusted on an annual basis by the amount of increase in the average weekly wages in the commonwealth as defined in section 1 of chapter 152, to be paid to an insured or a dependent, including the spouse of an insured, on the basis of a hospitalization of the insured or a dependent, disability income insurance, coverage issued as a supplement to liability insurance, specified disease insurance that is purchased as a supplement and not as a substitute for a health plan and meets any requirements the commissioner by regulation may set, insurance arising out of a workers' compensation law or similar law, automobile medical payment insurance, insurance under which benefits are payable with or without regard to fault and which is statutorily required to be contained in a liability insurance policy or equivalent self insurance, long-term care if offered separately, coverage supplemental to the coverage provided under 10 U.S.C. 55 if offered as a separate insurance policy, or any policy under chapter 176K. A health plan issued, renewed or delivered within or without the commonwealth to an individual who is enrolled in a qualifying student health insurance program under section 18 of chapter 15A shall not be considered a health plan under this chapter and shall be governed by said chapter 15A and the regulations promulgated hereunder. The commissioner may by regulation define other health coverage as a health benefit plan for the purposes of this chapter. [unchanged text not shown]