All ICD10 Codes

O66.2

Billable
ChapterO00–O9A
Ranksubcategory
Official Description

Obstructed labor 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).
General instructions are available for the parent sections:
View CH15 Notes

Clinical Hierarchy

CH15Pregnancy, childbirth and the puerperium (O00-O9A)
O60-O77Complications of labor and delivery (O60-O77)
O66Other obstructed labor
O66.2Obstructed labor due to unusually large fetus

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to O66.2:

chapterCH15
Pregnancy, childbirth and the puerperium (O00-O9A)
View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to O66.2. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

2 raw paths
Delivery (childbirth) (labor)1 unique routes
complicated
by
obstructed labor
due to
large fetus→O66.2
Dystocia1 unique routes
fetal
oversize→O66.2

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

DRG 817
Other Antepartum Diagnoses with O.R. Procedures with MCC
DRG 818
Other Antepartum Diagnoses with O.R. Procedures with CC
DRG 819
Other Antepartum Diagnoses with O.R. Procedures without CC/MCC
DRG 831
Other Antepartum Diagnoses without O.R. Procedures with MCC
DRG 832
Other Antepartum Diagnoses without O.R. Procedures with CC
DRG 833
Other Antepartum Diagnoses without O.R. Procedures without CC/MCC

Cross Reference

Find Procedures (ICD-10-PCS)

Find surgical and procedural codes related to Obstructed labor due to unusually large fetus.

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