45 CFR 152.20 - Prohibitions on pre-existing condition exclusions and waiting periods.
(a) Pre-existing condition exclusions. A PCIP must provide all enrollees with health coverage that does not impose any pre-existing condition exclusions (as defined in § 152.2) with respect to such coverage.
(b) Waiting periods. A PCIP may not impose a waiting period with respect to the coverage of services after the effective date of enrollment.