What Are Tier 6 Drugs and How Much Do They Cost?

Health insurance plans often categorize prescription medications into different “tiers” to determine how much patients pay for them. These drug tiers are a way for insurance providers to manage costs, with medications in lower tiers generally costing less out-of-pocket than those in higher tiers.

Defining Tier 6 Drugs

Tier 6 drugs typically represent specialty medications, which are complex, high-cost pharmaceuticals used to treat serious or chronic health conditions. These conditions include certain cancers, multiple sclerosis, rheumatoid arthritis, Crohn’s disease, and hepatitis C. Many of these medications are biologics, meaning they are derived from living cells and often require administration through injections or infusions. Their classification in a high tier, such as Tier 6, reflects their significant cost, intricate manufacturing processes, and the specialized care often needed for their administration.

These drugs differ considerably from medications in lower tiers, which typically include generic drugs (Tier 1) and preferred or non-preferred brand-name drugs (Tiers 2-4). Specialty drugs often require careful oversight from healthcare providers to monitor for side effects and ensure the treatment is effective.

Understanding the Costs

The financial implications for patients needing Tier 6 drugs are substantial due to their high cost. For these medications, insurance plans commonly apply coinsurance rather than a fixed copayment. Coinsurance means patients pay a percentage of the drug’s total cost, which can amount to a considerable sum, as many specialty drugs cost over $1,000 per month. For instance, patients might be responsible for 25% to 33% of the retail price.

In addition to coinsurance, patients are typically subject to deductibles, which must be met before insurance coverage begins. The high price of Tier 6 drugs means patients can quickly reach their annual out-of-pocket maximums. Once this maximum is met, the insurance plan covers 100% of approved in-network healthcare expenses for the remainder of the year. For 2025, the out-of-pocket maximum for individual plans can be as high as $9,200, and for family plans, it can reach $18,400.

Accessing and Managing Tier 6 Medications

Obtaining Tier 6 medications often involves specific administrative procedures. A common requirement is prior authorization (PA), where the healthcare provider must get approval from the insurance company before the medication is covered. This process typically involves submitting documentation to demonstrate medical necessity.

Another requirement that may apply is step therapy, which mandates that patients first try less expensive, alternative medications. If these initial treatments are ineffective or cause adverse reactions, the insurance company may then approve coverage for the more expensive Tier 6 drug. Specialty pharmacies play a central role in dispensing these medications, providing specialized handling and patient support, such as training on self-administration and side effect management. These pharmacies often coordinate with healthcare providers and can even ship medications directly to the patient’s home.

For patients facing significant out-of-pocket costs, various financial assistance programs are available. Pharmaceutical manufacturers often offer patient assistance programs (PAPs) that can help cover the cost of their specific drugs, sometimes providing them at no or low cost. Additionally, independent charitable organizations and non-profits provide financial aid to eligible patients to help with out-of-pocket medication expenses. These programs can provide a crucial safety net for individuals struggling to afford their necessary Tier 6 treatments.