Secondary diabetes mellitus due to pancreatectomy

For postpancreatectomy diabetes mellitus (lack of insulin due to the surgical removal of all or part of the pancreas), assign code E89.1, Postprocedural hypoinsulinemia.

Assign a code from category E13 as the principal or first- listed diagnosis and a code from subcategory Z90.41, Acquired absence of pancreas, as an additional code. (ii) Secondary diabetes due to drugs Secondary diabetes may be caused by an adverse effect of correctly administered medications, poisoning or sequela of poisoning.

See section I.C.19.e. for coding of adverse effects and poisoning, and section I.C.20 for external cause code reporting.