S.C. Code Ann. § 38-71-850
(A) Subject to subsection (C), a health insurance issuer offering group health insurance coverage, may, with respect to a participant or beneficiary, impose a preexisting condition exclusion only if the:
(B)
(1) For purposes of this subarticle, "creditable coverage" means, with respect to an individual, coverage of the individual under:
(k) Title XXI of the Social Security Act (State Children's Health Insurance Program).
The term does not include coverage consisting only of those benefits excepted from the definition of health insurance coverage.
(2)
(3)
(c) In the case of an election under subitem (b) with respect to health insurance coverage offered by an issuer in the small or large group market, the issuer:
(C)
(D)
(1)
(a) A health insurance issuer offering group health insurance coverage, shall provide the certification described in subitem (b):
(iii) on the request on behalf of an individual made not later than twenty-four months after the date of cessation of the coverage described in subitem (a)(i) or (ii), whichever is later.
The certification under sub-subitem (i) may be provided, to the extent practicable, at a time consistent with notices required under any applicable COBRA continuation provision.
(b) The certification described in this subitem is a written certification of:
(2) In the case of an election described in subitem (B)(3)(b) by a group health plan or health insurance issuer, if the plan or issuer enrolls an individual for coverage under the plan and the individual provides a certification of coverage of the individual under item (1):
(E)
(1) A health insurance issuer offering group health insurance coverage in connection with a group health plan, shall permit an employee who is eligible, but not enrolled, for coverage under the terms of the plan, or a dependent of the employee if the dependent is eligible, but not enrolled, for coverage under such terms, to enroll for coverage under the terms of the plan if each of the following conditions is met:
(c) The employee's or dependent's coverage described in subitem (a):
(2)
(a) If:
(b) A dependent special enrollment period under this subitem must be not less than thirty-one days and begins on the later of:
(c) If an individual seeks to enroll a dependent during the first thirty-one days of a dependent special enrollment period, the coverage of the dependent shall become effective:
(4) A health insurance issuer offering group health insurance coverage in connection with a group health plan shall permit an employee who is eligible, but not enrolled for coverage, or a dependent of the employee if the dependent is eligible, but not enrolled for coverage, to enroll for coverage under the terms of the plan if one of the following conditions is met:
(b) the employee or dependent becomes eligible for assistance with respect to coverage under the group health plan under a Medicaid plan or State Children's Health Insurance Program, including under any waiver or demonstration project conducted under or in relation to the plan or program, if the employee requests enrollment not later than sixty days after the date the employee or dependent is determined to be eligible for assistance.
An individual who requests enrollment as specified in this item must be enrolled, even if there is otherwise no open enrollment period, without any penalties for late enrollment.
(F)
(1) A health maintenance organization which offers health insurance coverage in connection with a group health plan and which does not impose any preexisting condition exclusion allowed under subsection (A) with respect to any particular coverage option may impose an affiliation period for such coverage option, but only if:
(G)
(1)
(a)
(b)
(c) In the case of an individual who seeks to establish creditable coverage for any period for which certification is not required because it relates to an event occurring before June 30, 1996: