O24.812
✓ BillableOther pre-existing diabetes mellitus in pregnancy, second trimester
Pregnancy, childbirth and the puerperium (O00-O9A)
📋 Code Instructions
inherited- • 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)
Clinical Description
ICD-10-CM code O24.812 represents other pre-existing diabetes mellitus in pregnancy, second trimester. This code falls under the Pregnancy, childbirth and the puerperium (O00-O9A) classification. It is a billable/specific code valid for HIPAA-covered transactions as of October 1, 2025 (FY2026). This code can be used to indicate a diagnosis for reimbursement purposes on insurance claims.
This is a 7-character code at the 6th level of specificity. This is the most specific code available in this subcategory.
Frequently Asked Questions
What is ICD-10 code O24.812?
ICD-10-CM code O24.812 is "Other pre-existing diabetes mellitus in pregnancy, second trimester". It belongs to the category: Pregnancy, childbirth and the puerperium (O00-O9A).
Is O24.812 a billable ICD-10 code?
Yes, O24.812 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
Related Codes in O24.81
Other codes in the same category that may be relevant for differential coding:
🧪 Validate Combinations
Add O24.812 to the Excludes Checker to validate against your full code list.
Open in Checker →Code Information
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)