O24.119 vs O98
O24.119 (Pre-existing type 2 diabetes mellitus, in pregnancy, unspecified trimester) compared with O98 (Maternal infectious and parasitic diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Can these codes be reported together?
Yes, when both are documented. O24.119 carries an Excludes2 note covering O98: “maternal diseases classifiable elsewhere but complicating pregnancy, labor and delivery, and the puerperium (O98-O99)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| O24.119Pre-existing type 2 diabetes mellitus, in pregnancy, unspecified trimester | O98Maternal infectious and parasitic diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | O00-O9A — Pregnancy, Childbirth and the Puerperium (O00-O9A) | O00-O9A — Pregnancy, Childbirth and the Puerperium (O00-O9A) |
| Definition | Pre-existing type 2 diabetes mellitus, in pregnancy, unspecified trimester is a billable ICD-10-CM diagnosis code (O24.119). | Maternal infectious and parasitic diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium is a non-billable ICD-10-CM category code (O98). |
| Includes | — | the listed conditions when complicating the pregnant state, when aggravated by the pregnancy, or as a reason for obstetric care |
| Use additional code | code (for): from category E11 to further identify any manifestations injectable non-insulin antidiabetic drugs (Z79.85) | code (Chapter 1), to identify specific infectious or parasitic disease |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources