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O98Non-billableSave

O98 - Maternal infectious and parasitic diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium

ICD-10-CM Chapter 15: Pregnancy, childbirth and the puerperium · O94-O9A Other obstetric conditions, not elsewhere classified (O94-O9A) · Top-level category · FY2027

Coding Guidance

O98 is a non-billable heading. Report one of the 10 more specific codes below.

Includes, Excludes and Coding Notes

IncludesFrom O98

Conditions this code covers.

  • the listed conditions when complicating the pregnant state, when aggravated by the pregnancy, or as a reason for obstetric care
Excludes 2 — Not Included HereFrom O98

Not part of this code; report both codes when the patient has both conditions.

  • 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 CodeFrom O98

Add a secondary code to identify the associated condition or cause when it is documented.

  • code (Chapter 1), to identify specific infectious or parasitic disease
Excludes 1 — Not Coded HereFrom Chapter O00-O9A

Mutually exclusive: these conditions are never reported together with this code.

  • supervision of normal pregnancy (Z34.-)
Excludes 2 — Not Included HereFrom Chapter O00-O9A

Not part of this code; report both codes when the patient has both conditions.

  • 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 CodeFrom Chapter O00-O9A

Add a secondary code to identify the associated condition or cause when it is documented.

  • code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.
NotesFrom Chapter O00-O9A

Instructional notes from the ICD-10-CM tabular list.

  • CODES FROM THIS CHAPTER ARE FOR USE ONLY ON MATERNAL RECORDS, NEVER ON NEWBORN RECORDS
  • Codes from this chapter are for use for conditions related to or aggravated by the pregnancy, childbirth, or by the puerperium (maternal causes or obstetric causes)
  • Trimesters are counted from the first day of the last menstrual period. They are defined as follows:
  • 1st trimester- less than 14 weeks 0 days
  • 2nd trimester- 14 weeks 0 days to less than 28 weeks 0 days
  • 3rd trimester- 28 weeks 0 days until delivery

More Specific Codes (10)

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→

Related condition guides

Documentation requirements, coding pitfalls and FAQs for conditions coded with O98.