• Subpart A [§ 831.101 - § 831.117] - Subpart A—Administration and General Provisions

• Subpart B [§ 831.201 - § 831.206] - Subpart B—Coverage

• Subpart C [§ 831.301 - § 831.307] - Subpart C—Credit for Service

• Subpart D [§ 831.401 - § 831.407] - Subpart D—Voluntary Contributions

• Subpart E [§ 831.501 - § 831.503] - Subpart E—Eligibility for Retirement

• Subpart F [§ 831.601 - § 831.685] - Subpart F—Survivor Annuities

• Subpart G [§ 831.701 - § 831.704] - Subpart G—Computation of Annuities

• Subpart H [§ 831.801 - § 831.811] - Subpart H—Nuclear Materials Couriers

• Subpart I [§ 831.901 - § 831.912] - Subpart I—Law Enforcement Officers and Firefighters

• Subpart J [§ 831.1001 - § 831.1006] - Subpart J—CSRS Offset

• Subpart K [§ 831.1101 - § 831.1112] - Subpart K—Prohibition on Payments of Annuities

• Subpart L [§ 831.1201 - § 831.1212] - Subpart L—Disability Retirement

• Subpart M [§ 831.1301 - § 831.1309] - Subpart M—Collection of Debts

• Subpart N [§ 831.1401 - § 831.1407] - Subpart N—Standards for Waiver of Overpayments

• Subpart O [§ 831.1501 - § 831.1521] - Subpart O—Allotments From Civil Service Annuities

• Subpart P [§ 831.1601 - § 831.1612] - Subpart P—Customs and Border Protection Officers

• Subpart Q [§ 831.1701 - § 831.1781] - Subpart Q—Phased Retirement

• Subpart R [§ 831.1801 - § 831.1808] - Subpart R—Agency Requests to OPM for Recovery of a Debt from the Civil Service Retirement and Disability Fund

• Subpart S [§ 831.1901 - § 831.1906] - Subpart S—State Income Tax Withholding

• Subpart T [§ 831.2001 - § 831.2011] - Subpart T—Payment of Lump Sums

• Subpart U [§ 831.2101 - § 831.2107] - Subpart U—Deposits for Military Service

• Subpart V [§ 831.2201 - § 831.2209] - Subpart V—Alternative Forms of Annuities

• Subpart X [§ 831.2401 - § 831.2404] - Subpart X—Peace Corps

• Subpart Y [§ 831.2501 - § 831.2504] - Subpart Y—Volunteers in Service to America (VISTA)