O33.5

Billable

ChapterO00–O9A

Ranksubcategory

Official Description

Maternal care for disproportion due to unusually large fetus

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Billable/specific code (valid for reimbursement).
•Chapter 15: Pregnancy, Childbirth and the Puerperium (O00-O9A).

Instructional Notes

Includes

Maternal care for disproportion due to disproportion of fetal origin with normally formed fetus
Maternal care for disproportion due to fetal disproportion NOS

General instructions are available for the parent sections:

View CH15 Notes View O33 Notes

Clinical Hierarchy

CH15Pregnancy, childbirth and the puerperium (O00-O9A)

O30-O48Maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48)

O33Maternal care for disproportion

O33.5Maternal care for disproportion due to unusually large fetus

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to O33.5:

categoryO33

Maternal care for disproportion

View context instructions

chapterCH15

Pregnancy, childbirth and the puerperium (O00-O9A)

View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to O33.5. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

3 raw paths

Delivery (childbirth) (labor)2 unique routes

cesarean (for)(2 variants)

increased size, fetus→O33.5

oversize fetus→O33.5

Pregnancy (single) (uterine)1 unique routes

complicated by (care of) (management affected by)

oversize fetus→O33.5

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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