Formula for calculating an issuer's medical loss ratio.

§ 158.221 Formula for calculating an issuer's medical loss ratio.

(a) Medical loss ratio. (1) An issuer's MLR is the ratio of the numerator, as defined in paragraph (b) of this section, to the denominator, as defined in paragraph (c) of this section, subject to the applicable credibility adjustment, if any, as provided in § 158.232 of this subpart.

(2) An issuer's MLR shall be rounded to three decimal places. For example, if an MLR is 0.7988, it shall be rounded to 0.799 or 79.9 percent. If an MLR is 0.8253 or 82.53 percent, it shall be rounded to 0.825 or 82.5 percent.

(b) Numerator. The numerator of an issuer's MLR for an MLR reporting year must be the issuer's incurred claims, as defined in § 158.140 of this part, plus the issuer's expenditures for activities that improve health care quality, as defined in § 158.150 and § 158.151 of this part, that are reported for the years specified in § 158.220 of this subpart.

(1) The numerator of the MLR for the 2012 MLR reporting year may include any rebate paid under § 158.240 of this subpart for the 2011 MLR reporting year if the 2012 MLR reporting year experience is not fully credible as defined in § 158.230 of this subpart.

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