Pre-existing type 2 diabetes mellitus, in the puerperium

This code signifies a patient with a pre-existing diagnosis of type 2 diabetes mellitus who is currently in the puerperium, the period immediately following childbirth. It indicates that the diabetes was present before the pregnancy and continues to be a health concern during the postpartum recovery phase.

Apply this code when a patient with a documented history of type 2 diabetes has recently given birth and is within the six-week postpartum period. Documentation should clearly state "pre-existing type 2 diabetes" and "puerperium" or "postpartum period."

• Always sequence this code after the primary reason for the encounter, if applicable.
• Do not confuse this with gestational diabetes, which develops during pregnancy and may resolve postpartum.
• Ensure documentation specifies "pre-existing" to differentiate from diabetes that developed or was first diagnosed during the current pregnancy.