O66.40 – Failed trial of labor, unspecified
ICD-10-CM 2027 diagnosis code · Complications of labor and delivery
ICD-10-CM code
O66.40
- Code
O66.40(claims format:O6640)- Description
- Failed trial of labor, unspecified
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 15. Pregnancy, childbirth and the puerperium (O00-O9A)
- Block
- O60-O77 Complications of labor and delivery
- Parent codes
- O66 › O66.4
Index terms for O66.40
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in O66.4
Frequently asked questions
What is ICD-10 code O66.40?
O66.40 is the ICD-10-CM code for failed trial of labor, unspecified, in the block O60-O77 (Complications of labor and delivery).
Is O66.40 a billable code?
Yes. O66.40 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does O66.40 belong to?
It belongs to category O66 – Other obstructed labor.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.