ICD-10/O98.111

O98.111 ICD 2026 Code: Syphilis complicating pregnancy, first trimester

O98.111 is the authoritative medical code for Syphilis complicating pregnancy, first trimester. This classification is used in medical billing and clinical recording to specify the clinical criteria for syphilis complicating pregnancy, first trimester (ICD-10-CM O98.111), ensuring healthcare documentation aligns with 2026 federal coding standards.

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Official Registry Overview & Definition

Syphilis complicating pregnancy, first trimester is a billable ICD-10-CM diagnosis code O98.111. Includes: the listed conditions when complicating the pregnant state, when aggravated by the pregnancy, or as a reason for obstetric care. Excludes2 (not included here): 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. Use additional code: code (Chapter 1), to identify specific infectious or parasitic disease.

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for O98.111 in the official ICD-10-CM tabular list.

Includes

Conditions the official ICD-10-CM tabular list includes under this code.

  • the listed conditions when complicating the pregnant state, when aggravated by the pregnancy, or as a reason for obstetric care

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

  • 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

Use Additional Code

Supplementary codes the tabular list directs you to add.

  • code (Chapter 1), to identify specific infectious or parasitic disease

Frequently Asked Questions (FAQ) & Clinical Guidance

Can O98.111 be reported alongside related conditions?

Per Excludes2 instructions, O98.111 and the following may both be reported when both are present: herpes gestationis (O26.4-); infectious carrier state (O99.82-, O99.83-); obstetrical tetanus (A34); puerperal infection (O86.-).

Is an additional code needed with O98.111?

Use additional code(s) to specify: code (Chapter 1), to identify specific infectious or parasitic disease.

Codes in This Family (40)

Official ICD-10-CM classifications in the same code family as O98.111, with their registry titles.

  • O98 — Maternal infectious and parasitic diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium
  • O98.0 — Tuberculosis complicating pregnancy, childbirth and the puerperium
  • O98.01 — Tuberculosis complicating pregnancy
  • O98.011 — Tuberculosis complicating pregnancy, first trimester
  • O98.012 — Tuberculosis complicating pregnancy, second trimester
  • O98.013 — Tuberculosis complicating pregnancy, third trimester
  • O98.019 — Tuberculosis complicating pregnancy, unspecified trimester
  • O98.02 — Tuberculosis complicating childbirth
  • O98.03 — Tuberculosis complicating the puerperium
  • O98.1 — Syphilis complicating pregnancy, childbirth and the puerperium
  • O98.11 — Syphilis complicating pregnancy
  • O98.112 — Syphilis complicating pregnancy, second trimester
  • O98.113 — Syphilis complicating pregnancy, third trimester
  • O98.119 — Syphilis complicating pregnancy, unspecified trimester
  • O98.12 — Syphilis complicating childbirth
  • O98.13 — Syphilis complicating the puerperium
  • O98.2 — Gonorrhea complicating pregnancy, childbirth and the puerperium
  • O98.21 — Gonorrhea complicating pregnancy
  • O98.211 — Gonorrhea complicating pregnancy, first trimester
  • O98.212 — Gonorrhea complicating pregnancy, second trimester
  • O98.213 — Gonorrhea complicating pregnancy, third trimester
  • O98.219 — Gonorrhea complicating pregnancy, unspecified trimester
  • O98.22 — Gonorrhea complicating childbirth
  • O98.23 — Gonorrhea complicating the puerperium
  • O98.3 — Other infections with a predominantly sexual mode of transmission complicating pregnancy, childbirth and the puerperium
  • O98.31 — Other infections with a predominantly sexual mode of transmission complicating pregnancy
  • O98.311 — Other infections with a predominantly sexual mode of transmission complicating pregnancy, first trimester
  • O98.312 — Other infections with a predominantly sexual mode of transmission complicating pregnancy, second trimester
  • O98.313 — Other infections with a predominantly sexual mode of transmission complicating pregnancy, third trimester
  • O98.319 — Other infections with a predominantly sexual mode of transmission complicating pregnancy, unspecified trimester
  • O98.32 — Other infections with a predominantly sexual mode of transmission complicating childbirth
  • O98.33 — Other infections with a predominantly sexual mode of transmission complicating the puerperium
  • O98.4 — Viral hepatitis complicating pregnancy, childbirth and the puerperium
  • O98.41 — Viral hepatitis complicating pregnancy
  • O98.411 — Viral hepatitis complicating pregnancy, first trimester
  • O98.412 — Viral hepatitis complicating pregnancy, second trimester
  • O98.413 — Viral hepatitis complicating pregnancy, third trimester
  • O98.419 — Viral hepatitis complicating pregnancy, unspecified trimester
  • O98.42 — Viral hepatitis complicating childbirth
  • O98.43 — Viral hepatitis complicating the puerperium

Related Codes & Numerical Sequence (Crawl Map)

Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures:

ICD Code O93.111 ICD-10 Clinical Diagnosis (O93.111)
ICD Code O94.111 ICD-10 Clinical Diagnosis (O94.111)
ICD Code O95.111 ICD-10 Clinical Diagnosis (O95.111)
ICD Code O96.111 ICD-10 Clinical Diagnosis (O96.111)
ICD Code O97.111 ICD-10 Clinical Diagnosis (O97.111)
ICD Code O99.111 Other diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism complicating pregnancy, first trimester
ICD Code O100.111 Clinical Diagnosis (O100.111)
ICD Code O101.111 Clinical Diagnosis (O101.111)
ICD Code O102.111 Clinical Diagnosis (O102.111)
ICD Code O103.111 Clinical Diagnosis (O103.111)
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