D.C. Mun. Regs. tit. 29, § 5817
5817.1 For purposes of this chapter, "underpayment" means a financial assistance payment received for the payment month which is less than the amount for which the assistance unit was eligible, or failure by the District to issue a TANF payment for the payment month to an eligible assistance unit if the payment should have been issued.
5817.2 Payments to correct underpayments shall not be considered as income or as a resource in the month paid nor in the following month for purposes of determining continued eligibility.
5817.3 Underpayments shall be promptly corrected.
SOURCE: Final Rulemaking published at 48 DCR 10251 (November 9, 2001).