Other pre-existing diabetes mellitus in the puerperium

This code signifies the presence of a pre-existing diabetes mellitus (e.g., Type 1 or Type 2 diabetes diagnosed prior to pregnancy) that continues to affect a patient during the puerperium, which is the period following childbirth, typically up to six weeks. It indicates that the diabetes was not gestational in origin but was a chronic condition present before the pregnancy.

Apply this code when a patient with a documented history of diabetes mellitus (Type 1 or Type 2) is being managed for their diabetes during the postpartum period. Documentation should clearly state the pre-existing nature of the diabetes and that the patient is currently in the puerperium.

• Always sequence this code after the primary code for the type of pre-existing diabetes (e.g., E10.9 or E11.9).
• Do not use this code for gestational diabetes that persists postpartum; use codes from category O24.4 for that scenario.
• Ensure documentation specifies "puerperium" or "postpartum" and confirms the diabetes was present prior to pregnancy.