ICD-10-CM 2027 diagnosis code
O24.8Other pre-existing diabetes mellitus in pregnancy, childbirth, and the puerperium
O24.8 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it.Short description: Oth pre-exist diabetes in pregnancy, chldbrth, and the puerp
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About O24.8
O24.8 is the ICD-10-CM diagnosis code for other pre-existing diabetes mellitus in pregnancy, childbirth, and the puerperium. It belongs to category O24 (diabetes mellitus in pregnancy, childbirth, and the puerperium), block O20-O29 (other maternal disorders predominantly related to pregnancy) and chapter 15 (pregnancy, childbirth and the puerperium). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.
Within O24, choose O24.8 (Other pre-existing diabetes mellitus in pregnancy, childbirth, and the puerperium) only when documentation doesn't support a more specific option: pre-existing type 1 diabetes mellitus, in pregnancy, childbirth and the puerperium (O24.0), pre-existing type 2 diabetes mellitus, in pregnancy, childbirth and the puerperium (O24.1), unspecified pre-existing diabetes mellitus in pregnancy, childbirth and the puerperium (O24.3), gestational diabetes mellitus (O24.4) and unspecified diabetes mellitus in pregnancy, childbirth and the puerperium (O24.9).
To report this condition, pick the subcode that matches the documentation: O24.81 (pregnancy), O24.82 (childbirth) and O24.83 (puerperium).
Use an additional code (for): from categories E08, E09 and E13 to further identify any manifestation, injectable non-insulin antidiabetic drugs (Z79.85) and long-term (current) use of insulin (Z79.4).
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Specific codes under O24.8
- O24.81Other pre-existing diabetes mellitus in pregnancy
- O24.811Other pre-existing diabetes mellitus in pregnancy, first trimesterBillable
- O24.812Other pre-existing diabetes mellitus in pregnancy, second trimesterBillable
- O24.813Other pre-existing diabetes mellitus in pregnancy, third trimesterBillable
- O24.819Other pre-existing diabetes mellitus in pregnancy, unspecified trimesterBillable
- O24.82Other pre-existing diabetes mellitus in childbirthBillable
- O24.83Other pre-existing diabetes mellitus in the puerperiumBillable
Coding notes
Notes that apply from higher levels
Instructions written at a parent level also apply to O24.8.
Broader instructions also apply from O20-O29 Other maternal disorders predominantly related to pregnancy and Chapter 15: Pregnancy, childbirth and the puerperium.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about O24.8
Is O24.8 billable?
- No. O24.8 is a header code. Report one of its more specific subcodes instead.