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O24.0

Non-billable

Pre-existing type 1 diabetes mellitus, in pregnancy, childbirth and the puerperium

O24.0 is the ICD-10-CM code for Pre-existing type 1 diabetes mellitus, in pregnancy, childbirth and the puerperium. It is a non-billable category code — use a more specific child code such as O24.01 for billing.

Status
Header (non-billable)
Chapter
O00-O9A
Parent
O24
Subcodes
3
Edition
FY2026

O00-O9A Pregnancy, childbirth and the puerperium

Includes

  • •Juvenile onset diabetes mellitus, in pregnancy, childbirth and the puerperium
  • •Ketosis-prone diabetes mellitus in pregnancy, childbirth and the puerperium

Use additional code

  • •code from category E10 to further identify any manifestations

Frequently asked questions

What is ICD-10 code O24.0?
O24.0 is the ICD-10-CM code for "Pre-existing type 1 diabetes mellitus, in pregnancy, childbirth and the puerperium". It falls under O00-O9A Pregnancy, childbirth and the puerperium.
Is O24.0 a billable code?
No — O24.0 is a non-billable header code. Use a more specific child code (such as O24.01) for billing.
What are the subcodes of O24.0?
O24.0 has 3 more specific child codes, including O24.01, O24.02, O24.03.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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