O33.30 is the authoritative medical code for Maternal care for disproportion due to outlet contraction of pelvis, not applicable or unspecified. This classification is used in medical billing and clinical recording to specify the clinical criteria for maternal care for disproportion due to outlet contraction of pelvis, not applicable or unspecified (ICD-10-CM O33.30), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Maternal care for disproportion due to outlet contraction of pelvis, not applicable or unspecified is a billable ICD-10-CM diagnosis code O33.30. 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. Inclusion terms: Maternal care for disproportion due to mid-cavity contraction pelvis; Maternal care for disproportion due to outlet contraction pelvis. Excludes1 (not coded here): disproportion with obstructed labor O65-O66. 7th character: One of the following 7th characters is to be assigned to code O33.3. 7th character 0 is for single gestations and multiple gestations where the fetus is unspecified. 7th characters 1 through 9 are for cases of multiple gestations to identify the fetus for which the code applies. The appropriate code from category O30, Multiple gestation, must also be assigned when assigning code O33.3 with a 7th character of 1 through 9..
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for O33.30 in the official ICD-10-CM tabular list.
Includes
Conditions the official ICD-10-CM tabular list includes under this code.
- the listed conditions as a reason for observation, hospitalization or other obstetric care of the mother, or for cesarean delivery before onset of labor
Inclusion Terms
Alternative terms the tabular list files under this code.
- Maternal care for disproportion due to mid-cavity contraction pelvis
- Maternal care for disproportion due to outlet contraction pelvis
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- disproportion with obstructed labor O65-O66
Frequently Asked Questions (FAQ) & Clinical Guidance
Does O33.30 require a 7th character?
Yes. One of the following 7th characters is to be assigned to code O33.3. 7th character 0 is for single gestations and multiple gestations where the fetus is unspecified. 7th characters 1 through 9 are for cases of multiple gestations to identify the fetus for which the code applies. The appropriate code from category O30, Multiple gestation, must also be assigned when assigning code O33.3 with a 7th character of 1 through 9..
What can't be coded together with O33.30?
Per Excludes1 instructions, O33.30 must not be reported with: disproportion with obstructed labor (O65-O66).
What conditions are included under O33.30?
Maternal care for disproportion due to outlet contraction of pelvis, not applicable or unspecified includes: Maternal care for disproportion due to mid-cavity contraction (pelvis); Maternal care for disproportion due to outlet contraction (pelvis).
Codes in This Family (40)
Official ICD-10-CM classifications in the same code family as O33.30, with their registry titles.
- O33 — Maternal care for disproportion
- O33.0 — Maternal care for disproportion due to deformity of maternal pelvic bones
- O33.1 — Maternal care for disproportion due to generally contracted pelvis
- O33.2 — Maternal care for disproportion due to inlet contraction of pelvis
- O33.3 — Maternal care for disproportion due to outlet contraction of pelvis
- O33.31 — Maternal care for disproportion due to outlet contraction of pelvis, fetus 1
- O33.32 — Maternal care for disproportion due to outlet contraction of pelvis, fetus 2
- O33.33 — Maternal care for disproportion due to outlet contraction of pelvis, fetus 3
- O33.34 — Maternal care for disproportion due to outlet contraction of pelvis, fetus 4
- O33.35 — Maternal care for disproportion due to outlet contraction of pelvis, fetus 5
- O33.39 — Maternal care for disproportion due to outlet contraction of pelvis, other fetus
- O33.3XX0 — Maternal care for disproportion due to outlet contraction of pelvis, not applicable or unspecified
- O33.3XX1 — Maternal care for disproportion due to outlet contraction of pelvis, fetus 1
- O33.3XX2 — Maternal care for disproportion due to outlet contraction of pelvis, fetus 2
- O33.3XX3 — Maternal care for disproportion due to outlet contraction of pelvis, fetus 3
- O33.3XX4 — Maternal care for disproportion due to outlet contraction of pelvis, fetus 4
- O33.3XX5 — Maternal care for disproportion due to outlet contraction of pelvis, fetus 5
- O33.3XX9 — Maternal care for disproportion due to outlet contraction of pelvis, other fetus
- O33.4 — Maternal care for disproportion of mixed maternal and fetal origin
- O33.40 — Maternal care for disproportion of mixed maternal and fetal origin, not applicable or unspecified
- O33.41 — Maternal care for disproportion of mixed maternal and fetal origin, fetus 1
- O33.42 — Maternal care for disproportion of mixed maternal and fetal origin, fetus 2
- O33.43 — Maternal care for disproportion of mixed maternal and fetal origin, fetus 3
- O33.44 — Maternal care for disproportion of mixed maternal and fetal origin, fetus 4
- O33.45 — Maternal care for disproportion of mixed maternal and fetal origin, fetus 5
- O33.49 — Maternal care for disproportion of mixed maternal and fetal origin, other fetus
- O33.4XX0 — Maternal care for disproportion of mixed maternal and fetal origin, not applicable or unspecified
- O33.4XX1 — Maternal care for disproportion of mixed maternal and fetal origin, fetus 1
- O33.4XX2 — Maternal care for disproportion of mixed maternal and fetal origin, fetus 2
- O33.4XX3 — Maternal care for disproportion of mixed maternal and fetal origin, fetus 3
- O33.4XX4 — Maternal care for disproportion of mixed maternal and fetal origin, fetus 4
- O33.4XX5 — Maternal care for disproportion of mixed maternal and fetal origin, fetus 5
- O33.4XX9 — Maternal care for disproportion of mixed maternal and fetal origin, other fetus
- O33.5 — Maternal care for disproportion due to unusually large fetus
- O33.50 — Maternal care for disproportion due to unusually large fetus, not applicable or unspecified
- O33.51 — Maternal care for disproportion due to unusually large fetus, fetus 1
- O33.52 — Maternal care for disproportion due to unusually large fetus, fetus 2
- O33.53 — Maternal care for disproportion due to unusually large fetus, fetus 3
- O33.54 — Maternal care for disproportion due to unusually large fetus, fetus 4
- O33.55 — Maternal care for disproportion due to unusually large fetus, fetus 5
Related Codes & Numerical Sequence (Crawl Map)
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