La. Stat. tit. 22 § 979
No health and accident insurer may unilaterally cancel a policy of insurance except for nonpayment of premiums, increase the premium for such policy, or reduce the benefits provided by such insurance policy after receipt or notice of any covered claim. The insurer may cancel the policy, as otherwise provided by law, after the claimant has been discharged from treatment for that condition and no further claims for that condition are expected, provided there has been no other receipt or notice of claim under that policy. This Section shall not prohibit any group health and accident insurer or any individual accident and health insurer from increasing its premium if the increase is applicable to all members of the group insurance plan, or all insureds who have the same individual accident and health plan or policy except that no health insurance issuer or health maintenance organization issuing group or individual policies or subscriber agreements shall increase its premium rates or reduce covered benefits under any policy or subscriber agreement after the commencement of the minimum one-hundred-eighty-day period provided for in R.S. 22:1068(C)(2)(a)(i) or 1074(C)(2)(a)(i).
La. R.S. § 22:979