ICD-10-CM O66 is the diagnosis code for Other obstructed labor. This code falls under the section "Complications of labor and delivery" within Chapter 15 — Pregnancy, childbirth and the puerperium (O00-O9A). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.
Understanding where O66 sits in the ICD-10-CM classification helps ensure proper coding:
No, O66 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
O66 is the ICD-10-CM diagnosis code for "Other obstructed labor". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
O66 is located in Section O60-O77 — "Complications of labor and delivery" within Chapter 15 of the ICD-10-CM Tabular List.
O66 has 9 sub-code(s) that provide more specific detail: O66.0, O66.1, O66.2, O66.3, O66.4 and more.
Use O66 when the patients documented diagnosis matches "Other obstructed labor" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Other obstructed labor is O66.
No, O66 is non-billable. Use a more specific sub-code for primary diagnosis billing.
O66 is in Chapter 15 of the ICD-10-CM Tabular List.
Yes, O66 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.