A. W. R. Ardianingrum, L. Deviga, I. Mathar, and K. N. Ramadanintyas, “Analysis of the Accuracy of Diagnostic Codes in BPJS Patient Referrals Based on ICD-10 at the Ngegong Community Health Center in Madiun City”, IJoASER, vol. 9, no. 1, pp. 222-232, Mar. 2026.