O24.312Billable
Unspecified pre-existing diabetes mellitus in pregnancy, second trimester
Short description: Unsp pre-existing diabetes in pregnancy, second trimester
- Chapter
- 15. Pregnancy, childbirth and the puerperium
- Category
- O24
- Effective date
- October 1, 2026
Related codes in category O24
O24Diabetes in pregnancy, childbirth, and the puerperiumO24.0Pre-exist type 1 diabetes, in preg, chldbrth and the puerpO24.01Pre-existing type 1 diabetes mellitus, in pregnancyO24.011Pre-existing type 1 diabetes, in pregnancy, first trimesterYesO24.012Pre-existing type 1 diabetes, in pregnancy, second trimesterYesO24.013Pre-existing type 1 diabetes, in pregnancy, third trimesterYesO24.019Pre-exist type 1 diabetes, in pregnancy, unsp trimesterYesO24.02Pre-existing type 1 diabetes mellitus, in childbirthYesO24.03Pre-existing type 1 diabetes mellitus, in the puerperiumYesO24.1Pre-exist type 2 diabetes, in preg, chldbrth and the puerpO24.11Pre-existing type 2 diabetes mellitus, in pregnancyO24.111Pre-existing type 2 diabetes, in pregnancy, first trimesterYes
Frequently asked questions
What is ICD-10 code O24.312?
O24.312 is an ICD-10-CM diagnosis code for Unspecified pre-existing diabetes mellitus in pregnancy, second trimester.
Is O24.312 a billable code?
Yes. O24.312 is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is O24.312 in?
O24.312 falls under Chapter 15: Pregnancy, childbirth and the puerperium.
When did O24.312 become effective?
O24.312 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to O24.312?
O24.312 belongs to category O24, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.