The Most Important Thing to Understand
⚠️ The Rules Are DIFFERENT for Part B and Part D
"Creditable coverage" means something different depending on whether you are talking about Part B or Part D. Coverage that protects you from Part D penalties may NOT protect you from Part B penalties. This is one of the most common and costly Medicare misconceptions.
Creditable Coverage for Part B (Medical Insurance)
For Part B, "creditable coverage" means you have a valid reason to delay enrollment without a penalty. The main qualifying reason is having active employer-sponsored health insurance through your own or your spouse's current employer.
✓ Coverage That Generally Protects You from Part B Penalties
- • Active employer-sponsored health insurance (your own or your spouse's current employer)
- • Coverage through a union based on current employment
⚠️ Coverage That Does NOT Protect You from Part B Penalties
- • VA health care
- • COBRA continuation coverage
- • Retiree health coverage from a former employer
- • Marketplace/ACA coverage
- • Individual health insurance
- • TRICARE (without also having Part B — but this creates a different problem)
💡 Important: The "Current Employment" Rule
The key for Part B is whether the coverage is based on current employment — yours or your spouse's. Retirement coverage, COBRA, and VA coverage do not qualify because they are not based on current employment.
Creditable Prescription Drug Coverage for Part D
For Part D, creditable coverage means your drug coverage is at least as good as the standard Medicare Part D benefit. Your plan must notify you each year whether your drug coverage is creditable.
✓ Coverage That Generally Protects You from Part D Penalties
- • VA prescription drug coverage
- • TRICARE prescription drug coverage
- • Employer or union drug coverage (if certified as creditable by your employer)
- • FEHB (Federal Employees Health Benefits) drug coverage
- • COBRA drug coverage (if the original plan was creditable)
- • Indian Health Service coverage
⚠️ The 63-Day Rule
When you lose creditable drug coverage, you have 63 days to enroll in Part D without a penalty. If you wait longer, you may face the Part D late enrollment penalty for every month you went without coverage.
Coverage Type Comparison
| Coverage Type | Protects from Part B Penalty? | Protects from Part D Penalty? |
|---|---|---|
| Active employer coverage (current employment) | ✓ Yes | ✓ Yes (if certified creditable) |
| VA health care | ✗ No | N/A (not drug coverage) |
| VA prescription drug coverage | N/A | ✓ Yes |
| TRICARE For Life | Requires Part B — different issue | ✓ Yes |
| COBRA continuation coverage | ✗ No | ✓ If original plan was creditable |
| Retiree health coverage | ✗ No | ✓ If certified creditable |
| Marketplace/ACA coverage | ✗ No | ✓ If certified creditable |
| FEHB (federal employees) | ✓ Yes (active employment) | ✓ Yes |
This table is for general educational purposes. Individual situations vary. Consult with a licensed Medicare professional for advice specific to your situation.