Part D Prompt Payment Due Date and Interest (Pharmacy Claims)
When a Part D plan must pay a retail network pharmacy's clean claim.
Open the tool → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Pharmacy type
- Retail network pharmacy
- Kind of claim
- Electronic claim
- Date transferred, or the postmark date
- 2026-10-01
- Date paid
- 2026-10-25
- Claim amount
- 10000 dollars
- 3-month Treasury rate for the period
- 4.4 percent
Result: Payment due October 15, 2026.
The tool opens with these values already filled in. Replace them with your own.
What you enter
- Pharmacy type
- Kind of claim
- Date transferred, or the postmark date (YYYY-MM-DD)
- Date of any deficiency notice (YYYY-MM-DD)
- Date additional information was received (YYYY-MM-DD)
- Date paid (YYYY-MM-DD)
- Claim amount
- 3-month Treasury rate for the period
How this is calculated
Citation
42 CFR 423.520(a) to (e): a Part D sponsor pays a clean claim from a network pharmacy (other than mail-order and long-term care) within 14 days of receipt if electronic and 30 days otherwise, and pays interest at the 3-month Treasury rate plus 0.1 percentage point when late. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.