O98

Non-Billable
ChapterO00–O9A
Rankcategory
Official Description

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

Metadata & Insights
  • Non-billable category (requires more specific sub-code).
  • Chapter 15: Pregnancy, Childbirth and the Puerperium (O00-O9A).

CH15 Parent Instructions

Excludes1(Not coded here. Use a different code.)
  • supervision of normal pregnancy (Z34.-)
Excludes2(Not included here. Code separately if applicable.)
  • 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. Code separately if applicable.)
  • 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

BillableHas subcodes
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 puerperiumNot billable
O98.0Tuberculosis complicating pregnancy, childbirth and the puerperiumSubcodes
O98.1Syphilis complicating pregnancy, childbirth and the puerperiumSubcodes
O98.2Gonorrhea complicating pregnancy, childbirth and the puerperiumSubcodes
O98.3Other infections with a predominantly sexual mode of transmission complicating pregnancy, childbirth and the puerperiumSubcodes
O98.4Viral hepatitis complicating pregnancy, childbirth and the puerperiumSubcodes
O98.5Other viral diseases complicating pregnancy, childbirth and the puerperiumSubcodes
O98.6Protozoal diseases complicating pregnancy, childbirth and the puerperiumSubcodes
O98.7Human immunodeficiency virus [HIV] disease complicating pregnancy, childbirth and the puerperiumSubcodes
O98.8Other maternal infectious and parasitic diseases complicating pregnancy, childbirth and the puerperiumSubcodes
O98.9Unspecified maternal infectious and parasitic disease complicating pregnancy, childbirth and the puerperiumSubcodes

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

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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