ICDcodes.org
FY2027

O33.1 — Maternal care for disproportion due to generally contracted pelvis

Billable

Is O33.1 billable?

Yes — O33.1 is billable for FY2027. O33.1 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. O33.1 may be submitted for encounters from October 1, 2026 through September 30, 2027.

O33.1 at a glance

CodeO33.1
DescriptionMaternal care for disproportion due to generally contracted pelvis
BillableYes
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027

Which MS-DRGs does O33.1 group to?

O33.1 sits in MDC 14 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.

  • 817Other Antepartum Diagnoses with O.R. Procedures with MCCsurgical
  • 818Other Antepartum Diagnoses with O.R. Procedures with CCsurgical
  • 819Other Antepartum Diagnoses with O.R. Procedures without CC/MCCsurgical

How is O33.1 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to O33.1. They show the wording a clinician may have documented, which often differs from the Tabular description.

  • Contraction, contracture, contracted › pelvis › with disproportion (s)
  • Infancy, infantile, infantilism › pelvis › with disproportion
  • Pregnancy › complicated by › contracted pelvis (single) (uterine)
  • Small › pelvis › with disproportion (ness)
  • Pregnancy › complicated by › disproportion › generally contracted pelvis (single) (uterine)

Inclusion terms

Alternative wording in documentation that is classified to O33.1.

  • Maternal care for disproportion due to contracted pelvis NOS causing disproportion

Excludes1 — never code together — inherited from Chapter 15

The conditions below can never be reported together with O33.1 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

  • supervision of normal pregnancy (Z34.-)

Excludes1 — never code together — inherited from O33

The conditions below can never be reported together with O33.1 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

  • disproportion with obstructed labor (O65-O66)

Use additional code — inherited from Chapter 15

Report an additional code alongside O33.1 to fully describe the condition. O33.1 is sequenced first.

  • code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.

Excludes2 — not included here — inherited from Chapter 15

The conditions below are not part of O33.1, but a patient may have both at the same time. When documentation supports it, O33.1 and the excluded code may both be reported.

  • mental and behavioral disorders associated with the puerperium (F53.-)
  • obstetrical tetanus (A34)
  • postpartum necrosis of pituitary gland (E23.0)
  • puerperal osteomalacia (M83.0)

How long has O33.1 existed?

O33.1 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.

Which conditions are coded to O33.1?

What other codes are in the O33 family? (9)