O98

Non-Billable
ChapterO00–O9A
Rankcategory
Official Description

Maternal infectious and parasitic diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium

Metadata & Insights
  • •2026 ICD-10-CM Edition - Effective October 1, 2025.
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 15: Pregnancy, Childbirth and the Puerperium (O00-O9A).

CH15 Parent Instructions

Excludes1(Not coded here)
  • supervision of normal pregnancy (Z34.-)
Excludes2(Not included here)
  • mental and behavioral disorders associated with the puerperium (F53.-)
  • obstetrical tetanus (A34)
  • postpartum necrosis of pituitary gland (E23.0)
  • puerperal osteomalacia (M83.0)
Use Additional Code
  • code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.

Instructional Notes

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

Clinical Hierarchy

CH15Pregnancy, childbirth and the puerperium (O00-O9A)
O94-O9AOther obstetric conditions, not elsewhere classified (O94-O9A)
O98Maternal infectious and parasitic diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium
O98.0Tuberculosis complicating pregnancy, childbirth and the puerperium
O98.1Syphilis complicating pregnancy, childbirth and the puerperium
O98.2Gonorrhea complicating pregnancy, childbirth and the puerperium
O98.3Other infections with a predominantly sexual mode of transmission complicating pregnancy, childbirth and the puerperium
O98.4Viral hepatitis complicating pregnancy, childbirth and the puerperium
O98.5Other viral diseases complicating pregnancy, childbirth and the puerperium
O98.6Protozoal diseases complicating pregnancy, childbirth and the puerperium
O98.7Human immunodeficiency virus [HIV] disease complicating pregnancy, childbirth and the puerperium
O98.8Other maternal infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium
O98.9Unspecified maternal infectious and parasitic disease complicating pregnancy, childbirth and the puerperium

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to O98:

chapterCH15
Pregnancy, childbirth and the puerperium (O00-O9A)
View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to O98. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

25 raw paths
Delivery (childbirth) (labor)13 unique routes
complicated(13 variants)
by(13 variants)
gonorrhea→O98
infection (maternal)→O98(9 variants)
gonorrhea→O98
human immunodeficiency virus (HIV)→O98
sexually transmitted NEC→O98
specified NEC→O98
syphilis→O98
tuberculosis→O98
viral hepatitis→O98
viral NEC→O98
protozoal disease (maternal)→O98
syphilis (maternal)→O98
tuberculosis (maternal)→O98
Infection, infected, infective (opportunistic)3 unique routes
streptococcal NEC(3 variants)
B genitourinary complicating(3 variants)
childbirth→O98
pregnancy→O98
puerperium→O98
Pregnancy (single) (uterine)9 unique routes
complicated by (care of) (management affected by)(9 variants)
genital herpes (asymptomatic) (history of) (inactive)→O98
gonorrhea→O98
hepatitis (viral)→O98
HIV→O98
human immunodeficiency virus (HIV) disease→O98
infection (s)→O98(4 variants)
gonorrhea→O98
hepatitis (viral)→O98
HIV→O98

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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