ICD-10-CM · Chapter 15 · O00–O9A
O24.312
Unspecified pre-existing diabetes mellitus in pregnancy, second trimester
Pregnancy, childbirth and the puerperium
Quick facts
- Code
- O24.312
- Type
- Billable code
- ICD-10-CM chapter
- Chapter 15 — Pregnancy, childbirth and the puerperium
- Category
- O24 — Diabetes mellitus in pregnancy, childbirth, and the puerperium
- Specificity
- 6 characters
How coders use this code
ICD-10-CM O24.312 is a billable, fully specified code, so it can be reported directly on a claim to document a diagnosis of unspecified pre-existing diabetes mellitus in pregnancy, second trimester. Coders assign it when the chart documentation supports this level of detail, always matching to the most specific code available and verifying against the chapter-specific guidelines published annually by NCHS/CMS.
Related codes in O24
- O24Diabetes mellitus in pregnancy, childbirth, and the puerperium
- O24.0Pre-existing type 1 diabetes mellitus, in pregnancy, childbirth and the puerperium
- O24.01Pre-existing type 1 diabetes mellitus, in pregnancy
- 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
- O24.02Pre-existing type 1 diabetes mellitus, in childbirth
- O24.03Pre-existing type 1 diabetes mellitus, in the puerperium
- O24.1Pre-existing type 2 diabetes mellitus, in pregnancy, childbirth and the puerperium
- O24.11Pre-existing type 2 diabetes mellitus, in pregnancy
- O24.111Pre-existing type 2 diabetes mellitus, in pregnancy, first trimester
- O24.112Pre-existing type 2 diabetes mellitus, in pregnancy, second trimester
- O24.113Pre-existing type 2 diabetes mellitus, in pregnancy, third trimester
- O24.119Pre-existing type 2 diabetes mellitus, in pregnancy, unspecified trimester
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