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O98.311

O98.311: Other infections with a predominantly sexual mode of transmission complicating pregnancy, first trimester

Billable / specific codeICD-10-CM

O98.311 is a billable, specific ICD-10-CM code for other infections with a predominantly sexual mode of transmission complicating pregnancy, first trimester. It is valid for submission on a claim.

Check O98.311 with the rest of the claim: free scrubber

Excludes2 inherited from the categories above O98.311

Not part of this code, but both may be coded when both are present.

Written on O98: Maternal infectious and parasitic diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium

  • herpes gestationis (O26.4-)
  • infectious carrier state (O99.82-, O99.83-)
  • obstetrical tetanus (A34)
  • puerperal infection (O86.-)
  • puerperal sepsis (O85)
  • when the reason for maternal care is that the disease is known or suspected to have affected the fetus (O35-O36)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under O98.31

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.