O33.9
Maternal care for disproportion, unspecified
Billable FY2026 2025-10-01 → 2026-09-30
This is the unspecified option. 9 more
specific codes sit alongside it. Worth
checking whether the documentation supports one of them.
Exclusions 6 never code together
O00-O9Achapter
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 10
O33code
Includes
- the listed conditions as a reason for observation, hospitalization or other obstetric care of the mother, or for cesarean delivery before onset of labor
O33.9code
Inclusion terms
- Maternal care for disproportion due to cephalopelvic disproportion NOS
- Maternal care for disproportion due to fetopelvic disproportion NOS
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 2
Alongside this code 9 same parent — O33
O33.0 Matern care for disproprtn d/t deformity of matern pelv bone O33.1 Matern care for disproprtn d/t generally contracted pelvis O33.2 Maternal care for disproprtn due to inlet contrctn of pelvis O33.3 Matern care for disproprtn due to outlet contrctn of pelvis category O33.4 Matern care for disproprtn of mixed matern and fetal origin category O33.5 Maternal care for disproportion due to unusually large fetus category O33.6 Maternal care for disproportion due to hydrocephalic fetus category O33.7 Maternal care for disproportion due to oth fetal deformities category O33.8 Maternal care for disproportion of other origin
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.