Med Student vs Resident Notes

When I was a ward clerk many years ago. Whenever a MS wrote an order the resident had to co-sign. Does the same applies when billing? I know in order to bill for an attending physician they are to do their tie in note to the resident note, but what if there is no resident note and the note that is above the attending note is the MS. Can the Resident co-sign on that note or do they have to wright their own note.

Ms

A medical students notes are not factored into level of service. The resident and physician must document involvement.

Ms

"The only documentation by medical students that may be used by the teaching physician is their documentation of the review of systems (ROS) and past, family and social history (PFSH). The teaching physician may NOT refer to a medical student's documentation of physical exam finding or medical decision making in his/her personal note. The teaching physician must verify and re-document the history of present illness as well as perform and re-document the physical exam and medical decision-making activities of the visit service. This rule also applies to the documentation by other kinds of students, e.g., physician assistants and nurse practitioners."
And this comes from a clarification memo sent from the AAMC Division of Health Care Affairs to the AAMC Group on Faculty Practice on Nov. 4, 1998