“…Blood tests for vitamin D can be directly identified in claims data (AL position 1006.00). Medications reimbursed by mandatory insurance and medical claims were used to indicate vitamin D supplementation (ATC A11CB, A11CC, A12AX), and conditions that are indications for vitamin D testing according to Swiss guidelines [8]: renal disease (3+ packages ATC B03XA01, B03XA02, B03XA03, V03AE01, V03AE02, V03AE03, V03AE04), osteoporosis (3+ packages ATC M05BA, M05BB, H05BA,G03XC, M05BX04, H05AA02, M05BX53; or DRG I69; or TARMED 39.2140, 39.2150, 39.2160), epilepsy (3+ packages ATC N03AA, N03AB, N03AF), hyperparathyroidism (3+ packages ATC H05BX01, H05BX02, H05BX04, V03AE02, A02AB01, V03AE07), HIV (3+ packages ATC J05AR) and intake of corticosteroids (3+ packages ATC H02). Pregnancy was identified based on claims related to maternity that are exempt from copayments.…”