Fair Debt Collection Practices Technical Clarification Act of 2013 - Amends the Fair Debt Collection Practices Act to exclude from the definition of "debt collector" any law firm or licensed attorney: (1) serving, filing, or conveying formal legal pleadings, discovery requests, or other documents pursuant to the applicable rules of civil procedure; or (2) communicating in, or at the direction of, a court of law or in depositions or settlement conferences, in connection with a pending legal action to collect a debt on behalf of a client.