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O99.331

Billable

Smoking (tobacco) complicating pregnancy, first trimester

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

What This Code Means

Tobacco smoking during the first three months of pregnancy (first trimester) that causes complications for the mother or fetus.

Coding Tips

  • Confirm first trimester timing is documented before assigning this code
  • Document smoking quantity and any documented effects on early fetal development

Code Hierarchy

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