How do I determine which ADP code to use?

FHA Automated Data Processing (ADP) Codes are derived from the section of the National Housing Act under which the mortgage is to be insured. The lender must select the correct ADP code for each mortgage in FHA Connection (FHAC). 
The Mortgagee can access the ADP code listing in FHAC using: For additional information see Handbook 4000.1 II.A.1.a.iii(B)(1)(a) available at

All policy information contained in this knowledge base article is based upon the referenced HUD policy document. Any lending or insuring decisions should adhere to the specific information contained in that underlying policy document.

Topic Number: KA-04935