On the MAO-004 Report, does the information in the Additional Diagnosis Codes field 35 apply to the diagnoses in the Current ICN field 9 or the diagnoses in the Prior Record ICN field 13?

Diagnoses reported in field #35 as add, delete or “blank” reference the diagnoses reported on the submitted encounter (#9). For replacements, voids, and linked chart review deletes, field #35 will also report diagnoses deleted from the prior record that the encounter or chart review is linked to, the Internal Control Number (ICN) listed in field (#13).