ICD10BillableValid for clinical use

ICD-10 Code O98.112: Syphilis complicating pregnancy, second trimester

O98.112 is a billable ICD-10 diagnosis code used to classify Syphilis complicating pregnancy, second trimester in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Pregnancy, childbirth and the puerperium (O00-O9A).

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Pregnancy, childbirth and the puerperium (O00-O9A).

When is it used?

  • May be used when a clinician documents syphilis complicating pregnancy, second trimester in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

Code hierarchy

chapter
15Pregnancy, childbirth and the puerperium (O00-O9A)
block
O94-O9AOther obstetric conditions, not elsewhere classified
category
O98Maternal infectious and parasitic diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium
category
O98.1Syphilis complicating pregnancy, childbirth and the puerperium
category
O98.11Syphilis complicating pregnancy
currentO98.11

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Related specialists

ObstetricianGynecologist

Related procedures

Obstetric ultrasound
May appear in pregnancy follow-up pathways when maternal infection complicates pregnancy and fetal well-being is monitored.
Fetal nonstress testing
May be used in selected higher-risk pregnancy monitoring pathways.

Coding guidelines

Common synonyms

Syphilis complicating pregnancy, second trimester

Frequently asked questions

Code details

CodeO98.112
SystemICD10
Display nameSyphilis complicating pregnancy, second trimester
ChapterPregnancy, childbirth and the puerperium (O00-O9A)
BlockOther obstetric conditions, not elsewhere classified

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

ICD-10 Code O98.112 for Syphilis complicating pregnancy, second trimester | HealthAssure