O66 ICD-10-CM Code: Other obstructed labor
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Official description
O66Other obstructed labor
ICD-10-CM diagnosis code · United States clinical modification
Where O66 sits
- 1
Chapter 15
Pregnancy, childbirth and the puerperium (O00-O9A)
- 2
Section
Complications of labor and delivery (O60-O77)
- 3
Category O66
Other obstructed labor
- 4
Code O66
Other obstructed labor
Codes under O66
O66 is a non-billable category. Choose the child code that best matches the documented diagnosis.
O66.0Obstructed labor due to shoulder dystociaO66.1Obstructed labor due to locked twinsO66.2Obstructed labor due to unusually large fetusO66.3Obstructed labor due to other abnormalities of fetusO66.4Failed trial of laborO66.5Attempted application of vacuum extractor and forcepsO66.6Obstructed labor due to other multiple fetusesO66.8Other specified obstructed laborO66.9Obstructed labor, unspecifiedNotes for this code
Inclusion terms
No inclusion terms are listed for O66.
Code first
No “code first” instruction is listed for O66.
Use additional code
No “use additional code” instruction is listed for O66.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for O66.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for O66.
Source and release
- Data release
- U.S. ICD-10-CM · FY 2027
- Effective date
- Oct 1, 2026
- Publisher
- Vero Scribe Inc.
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Frequently asked questions
What does ICD-10-CM code O66 mean?
O66 is the FY 2027 U.S. ICD-10-CM code for “Other obstructed labor.”
Is O66 a billable or specific ICD-10-CM code?
No. O66 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.
Where is O66 located in ICD-10-CM?
O66 is listed in Chapter 15, Pregnancy, childbirth and the puerperium (O00-O9A), within Complications of labor and delivery (O60-O77) (O60–O77), under category O66, Other obstructed labor.
What coding notes are listed for O66?
No inclusion terms are listed for O66 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.