O24.01
Header — not billablePre-existing type 1 diabetes mellitus, in pregnancy
The ICD-10 code for pre-existing type 1 diabetes mellitus, in pregnancy is O24.01.
O24.01 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 4 more specific codes below.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Child codes under O24.01
- O24.011Pre-existing type 1 diabetes mellitus, in pregnancy, first trimester
- O24.012Pre-existing type 1 diabetes mellitus, in pregnancy, second trimester
- O24.013Pre-existing type 1 diabetes mellitus, in pregnancy, third trimester
- O24.019Pre-existing type 1 diabetes mellitus, in pregnancy, unspecified trimester
Related codes in this category
- O24.02Pre-existing type 1 diabetes mellitus, in childbirth
- O24.03Pre-existing type 1 diabetes mellitus, in the puerperium
- O24.01Pre-existing type 1 diabetes mellitus, in pregnancynon-billable header