ICD-10-CM · Chapter 15 · O00-O9A
O33 Maternal care for disproportion
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
Excludes 1 (cannot be coded together)
- disproportion with obstructed labor (O65-O66)
Subcodes
Subcodes are listed below for reference. Detail pages are not available for chapters 11–22.
| Code | Description | Billable |
|---|---|---|
| O33..0 | Maternal care for disproportion due to deformity of maternal pelvic bones | Yes |
| O33..1 | Maternal care for disproportion due to generally contracted pelvis | Yes |
| O33..2 | Maternal care for disproportion due to inlet contraction of pelvis | Yes |
| O33..3 | Maternal care for disproportion due to outlet contraction of pelvis | No |
| O33..4 | Maternal care for disproportion of mixed maternal and fetal origin | No |
| O33..5 | Maternal care for disproportion due to unusually large fetus | No |
| O33..6 | Maternal care for disproportion due to hydrocephalic fetus | No |
| O33..7 | Maternal care for disproportion due to other fetal deformities | No |
| O33..8 | Maternal care for disproportion of other origin | Yes |
| O33..9 | Maternal care for disproportion, unspecified | Yes |
Last reviewed: September 2026