OH HB429

Amends Ohio Revised Code section 3901.385 to prohibit third-party payers (insurers) from reducing health care provider reimbursements based on the payer's own service descriptions that differ from official medical coding standards

Requires reimbursement determinations to follow current CPT codes (American Medical Association), ICD-10 codes (HHS), CDT codes (American Dental Association), and HCPCS codes (CMS) rather than payer-created definitions

Prohibits payers from using their own diagnosis code interpretations that deviate from guidelines established by responsible entities like the CDC's National Center for Health Statistics

Bans reimbursement reductions solely because a provider billed for additional health services, including outpatient surgery, on the same date as the covered service

Retains existing prohibitions against unfair claim processing delays and refusal to pay claims for ongoing treatment covering at least a 30-day period