O98.6
Protozoal diseases complicating pregnancy, childbirth and the puerperium
Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 11 never code together
Instructional notes 10
O98code
Includes
- the listed conditions when complicating the pregnant state, when aggravated by the pregnancy, or as a reason for obstetric care
Use additional code
- code (Chapter 1), to identify specific infectious or parasitic disease
O00-O9Achapter
Notes
- 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
Use additional code
- code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.Z3A
Index entries leading here filed at null
No alphabetic index entry points at this code.
Alongside this code 9 same parent — O98
O98.0 Tuberculosis compl preg/chldbrth category O98.1 Syphilis compl preg/chldbrth category O98.2 Gonorrhea compl preg/chldbrth category O98.3 Oth infections w sexl mode of transmiss compl preg/chldbrth category O98.4 Viral hepatitis compl preg/chldbrth category O98.5 Oth viral diseases compl preg/chldbrth category O98.7 Human immunodeficiency virus disease compl preg/chldbrth category O98.8 Oth maternal infec/parastc diseases compl preg/chldbrth category O98.9 Unsp maternal infec/parastc disease compl preg/chldbrth category
Subordinate codes 3
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.