O24.02 is the authoritative medical code for Pre-existing type 1 diabetes mellitus, in childbirth. This classification is used in medical billing and clinical recording to specify the clinical criteria for pre-existing type 1 diabetes mellitus, in childbirth (ICD-10-CM O24.02), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Pre-existing type 1 diabetes mellitus, in childbirth is a billable ICD-10-CM diagnosis code O24.02. Excludes2 (not included here): maternal care related to the fetus and amniotic cavity and possible delivery problems O30-O48; maternal diseases classifiable elsewhere but complicating pregnancy, labor and delivery, and the puerperium O98-O99. Use additional code: code from category E10 to further identify any manifestations.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for O24.02 in the official ICD-10-CM tabular list.
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- maternal care related to the fetus and amniotic cavity and possible delivery problems O30-O48
- maternal diseases classifiable elsewhere but complicating pregnancy, labor and delivery, and the puerperium O98-O99
Use Additional Code
Supplementary codes the tabular list directs you to add.
- code from category E10 to further identify any manifestations
Frequently Asked Questions (FAQ) & Clinical Guidance
Can O24.02 be reported alongside related conditions?
Per Excludes2 instructions, O24.02 and the following may both be reported when both are present: maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48); maternal diseases classifiable elsewhere but complicating pregnancy, labor and delivery, and the puerperium (O98-O99).
Is an additional code needed with O24.02?
Use additional code(s) to specify: code from category E10 to further identify any manifestations.
Codes in This Family (40)
Official ICD-10-CM classifications in the same code family as O24.02, with their registry titles.
- O24 — Diabetes mellitus in pregnancy, childbirth, and the puerperium
- O24.0 — Pre-existing type 1 diabetes mellitus, in pregnancy, childbirth and the puerperium
- O24.01 — Pre-existing type 1 diabetes mellitus, in pregnancy
- O24.011 — Pre-existing type 1 diabetes mellitus, in pregnancy, first trimester
- O24.012 — Pre-existing type 1 diabetes mellitus, in pregnancy, second trimester
- O24.013 — Pre-existing type 1 diabetes mellitus, in pregnancy, third trimester
- O24.019 — Pre-existing type 1 diabetes mellitus, in pregnancy, unspecified trimester
- O24.03 — Pre-existing type 1 diabetes mellitus, in the puerperium
- O24.1 — Pre-existing type 2 diabetes mellitus, in pregnancy, childbirth and the puerperium
- O24.11 — Pre-existing type 2 diabetes mellitus, in pregnancy
- O24.111 — Pre-existing type 2 diabetes mellitus, in pregnancy, first trimester
- O24.112 — Pre-existing type 2 diabetes mellitus, in pregnancy, second trimester
- O24.113 — Pre-existing type 2 diabetes mellitus, in pregnancy, third trimester
- O24.119 — Pre-existing type 2 diabetes mellitus, in pregnancy, unspecified trimester
- O24.12 — Pre-existing type 2 diabetes mellitus, in childbirth
- O24.13 — Pre-existing type 2 diabetes mellitus, in the puerperium
- O24.3 — Unspecified pre-existing diabetes mellitus in pregnancy, childbirth and the puerperium
- O24.31 — Unspecified pre-existing diabetes mellitus in pregnancy
- O24.311 — Unspecified pre-existing diabetes mellitus in pregnancy, first trimester
- O24.312 — Unspecified pre-existing diabetes mellitus in pregnancy, second trimester
- O24.313 — Unspecified pre-existing diabetes mellitus in pregnancy, third trimester
- O24.319 — Unspecified pre-existing diabetes mellitus in pregnancy, unspecified trimester
- O24.32 — Unspecified pre-existing diabetes mellitus in childbirth
- O24.33 — Unspecified pre-existing diabetes mellitus in the puerperium
- O24.4 — Gestational diabetes mellitus
- O24.41 — Gestational diabetes mellitus in pregnancy
- O24.410 — Gestational diabetes mellitus in pregnancy, diet controlled
- O24.414 — Gestational diabetes mellitus in pregnancy, insulin controlled
- O24.415 — Gestational diabetes mellitus in pregnancy, controlled by oral hypoglycemic drugs
- O24.419 — Gestational diabetes mellitus in pregnancy, unspecified control
- O24.42 — Gestational diabetes mellitus in childbirth
- O24.420 — Gestational diabetes mellitus in childbirth, diet controlled
- O24.424 — Gestational diabetes mellitus in childbirth, insulin controlled
- O24.425 — Gestational diabetes mellitus in childbirth, controlled by oral hypoglycemic drugs
- O24.429 — Gestational diabetes mellitus in childbirth, unspecified control
- O24.43 — Gestational diabetes mellitus in the puerperium
- O24.430 — Gestational diabetes mellitus in the puerperium, diet controlled
- O24.434 — Gestational diabetes mellitus in the puerperium, insulin controlled
- O24.435 — Gestational diabetes mellitus in puerperium, controlled by oral hypoglycemic drugs
- O24.439 — Gestational diabetes mellitus in the puerperium, unspecified control
Indexed Clinical Terms (1)
Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.
- Delivery (childbirth) (labor), complicated, by, diabetes, pre-existing, type 1
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures:
ICD Code O22.02
Varicose veins of lower extremity in pregnancy, second trimester
ICD Code O29.02
Pressure collapse of lung due to anesthesia during pregnancy