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O24.011

Billable

Pre-existing type 1 diabetes mellitus, in pregnancy, first trimester

This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

A patient with type 1 diabetes that existed before pregnancy and is being managed during the first three months of pregnancy.

Coding Tips

  • This code indicates pre-existing diabetes, not gestational diabetes; ensure documentation confirms diabetes diagnosis predates pregnancy
  • Document glycemic control status and any complications; may require additional codes for complications like diabetic nephropathy or retinopathy

Code Hierarchy

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