Ob-Gyn Coding Alert

ICD-10-CM Update:

2025 Changes Focused on Notes Beneath Gestational Diabetes Diagnoses

Remember to include additional code for drug patient is taking.

The ICD-10-CM code set update for fiscal year (FY) 2025 was posted July 3 to the Centers for Medicare & Medicaid Services (CMS) website. The update, effective October 1, includes 252 new codes, 36 code deletions, and 13 code revisions. For ob-gyn practices, the biggest change focuses on the coding notes underneath gestational diabetes codes.

Look at Which Specific Codes Are Affected

Specifically, you will see a “use additional” note, if applicable, for the diagnosis codes. The notation says: “Use Additional injectable non-insulin antidiabetic drugs (Z79.85).”

This notation applies to the following codes in the O24- (Diabetes mellitus in pregnancy, childbirth, and the puerperium) category:

  • O24.1- (Pre-existing type 2 diabetes mellitus, in pregnancy, childbirth and the puerperium)
  • O24.3- (Unspecified pre-existing diabetes mellitus in pregnancy, childbirth and the puerperium)
  • O24.8- (Other pre-existing diabetes mellitus in pregnancy, childbirth, and the puerperium)

New Revised Note Under O24.9

Underneath O24.9- (Unspecified diabetes mellitus in pregnancy, childbirth and the puerperium), you will see a note revision.

As of October 1, you will revise the note specifying “code for long-term (current) use of insulin (Z79.4)” to say “code (for):

  • “From categories E08, E09 and E13 to further identify any manifestation
  • “Injectable non-insulin antidiabetic drugs (Z79.85)
  • ”Long-term (current) use of insulin (Z79.4).”

What this means: “This addition refers to patients who would be taking drugs like Victoza, Trulicity, or Ozempic,” says Melanie Witt, RN, MA, an independent coding consultant in Guadalupita, New Mexico. “It just adds more information about the drug the patient is using to control her diabetes. You of course would only report this Z code is she were taking one of these drugs.”


Other Articles in this issue of

Ob-Gyn Coding Alert

View All

Which Codify by AAPC tool is right for you?

Call 844-334-2816 to speak with a Codify by AAPC specialist now.