O24.12 — Pre-existing type 2 diabetes mellitus, in childbirth
O24.12 is a billable, specific ICD-10-CM code for pre-existing type 2 diabetes mellitus, in childbirth. It is valid for submission on a claim.
Risk adjustment
O24.12 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
O24.12 is named in 10 Medicare coverage policies — 10 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A52464Glucose Monitor - Policy Article
- A52996Billing and Coding: Routine Foot Care
- A57189Billing and Coding: Serum Magnesium
- A58110Billing and Coding: Implantable Continuous Glucose Monitors (I-CGM)
How O24.12 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to O24.12.
- Delivery›complicated›by›diabetes›pre-existing›type 2
Related codes at this level
Codes that share O24.1. If O24.12 is not quite right, the correct code is usually one of these.
Questions about O24.12
- Is O24.12 a billable ICD-10-CM code?
- Yes. O24.12 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does O24.12 sit in the tabular list?
- Pregnancy, childbirth and the puerperium (O00-O9A), in the block Other maternal disorders predominantly related to pregnancy (O20-O29).