E10.A1 — Type 1 diabetes mellitus, presymptomatic, Stage 1
E10.A1 is a billable, specific ICD-10-CM code for type 1 diabetes mellitus, presymptomatic, stage 1. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Multiple confirmed islet autoantibodies with normoglycemia
Risk adjustment
E10.A1 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
E10.A1 is named in 4 Medicare coverage policies — 4 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
- A56232Billing and Coding: Foot Care
- A56675Billing and Coding: Homocysteine Level, Serum
- A56686Billing and Coding: HbA1c
How E10.A1 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 E10.A1.
- Autoantibodies, multiple confirmed islet, with normoglycemia
- Diabetes, diabetic›type 1›presymptomatic›Stage 1
Related codes at this level
Codes that share E10.A. If E10.A1 is not quite right, the correct code is usually one of these.
Questions about E10.A1
- Is E10.A1 a billable ICD-10-CM code?
- Yes. E10.A1 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does E10.A1 sit in the tabular list?
- Endocrine, nutritional and metabolic diseases (E00-E89), in the block Diabetes mellitus (E08-E13).