TRICARE Prime Enrollment Deadlines
For ADSMs enrolling in TRICARE Prime or TPR, coverage begins when Humana Military receives the completed enrollment application. For ADFMs enrolling in TRICARE Prime or TPRADFM, and for retired service members, their families, and all others enrolling in TRICARE Prime, the 20th-of-the-month rule applies.
With the 20th-of-the-month rule, as long as Humana Military receives your completed enrollment application by the 20th of the month, your coverage will begin on the first day of the next month. The application must be received by the 20th of the month, not postmarked by the 20th of the month. If the form is received after the 20th of the month, then coverage begins on the first day of the second month following receipt of your application. See Figure 5.1 to determine when your coverage will begin.
Figure 5.1 Enrollment Deadlines
| Application Received |
Enrollment Start |
Application Received |
Enrollment Start |
| January 1-20 |
February 1 |
July 1-20 |
August 1 |
| January 21-31 |
March 1 |
July 21-31 |
September 1 |
| February 1-20 |
March 1 |
August 1-20 |
September 1 |
| February 21-28 |
April 1 |
August 21-31 |
October 1 |
| March 1-20 |
April 1 |
September 1-20 |
October 1 |
| March 21-31 |
May 1 |
September 21-30 |
November 1 |
| April 1-20 |
May 1 |
October 1-20 |
November 1 |
| April 21-30 |
June 1 |
October 21-31 |
December 1 |
| May 1-20 |
June 1 |
November 1-20 |
December 1 |
| May 21-31 |
July 1 |
November 21-30 |
January 1 |
| June 1-20 |
July 1 |
December 1-20 |
January 1 |
| June 21-31 |
August 1 |
December 21-31 |
February 1 |
Be sure to include all beneficiary information requested (Social Security number, birth dates, home addresses, telephone numbers, etc.). If information is incomplete or missing on your enrollment application, it may delay processing as well as the effective date of your TRICARE coverage. Remember to sign and date your application, and include both your home and daytime telephone numbers where you can be reached, if necessary.
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