ampicillin 100 MG/ML Injectable Solution

What the CMS Formulary Data Shows for ampicillin 100 MG/ML Injectable Solution

Per the CMS 2026 Part D formulary file, ampicillin 100 MG/ML Injectable Solution (RxNorm concept RXCUI 789980, generic name ampicillin) appears on 302 distinct formulary files spanning 4,925 Medicare Part D plan offerings - 97.2% of enrollable Part D products, near-universal placement. Tier placement ranges from Tier 1 to Tier 6, with a cross-plan average of Tier 2.7.

Real-world access to ampicillin 100 MG/ML Injectable Solution depends on utilization management as much as tier placement: 10.3% of covering formularies require prior authorization. 0% require step therapy. 0% apply quantity limits.

Historical spending context from the CMS Medicare Part D Drug Spending Dashboard shows 3,864 Part D beneficiaries filled ampicillin 100 MG/ML Injectable Solution in 2023, with total plan-and-beneficiary spending of $4,689,949 and an average per-beneficiary annual cost of $1,213.76. The plan-by-plan detail below lists exactly which PDP and MA-PD contracts carry ampicillin 100 MG/ML Injectable Solution today.