O63: Long labor
Codes under O63 (Long labor). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| O63.0 | Prolonged first stage (of labor) | ✓ |
| O63.0 | Prolonged first stage (of labor) | ✓ |
| O63.1 | Prolonged second stage (of labor) | ✓ |
| O63.1 | Prolonged second stage (of labor) | ✓ |
| O63.2 | Delayed delivery of second twin, triplet, etc. | ✓ |
| O63.2 | Delayed delivery of second twin, triplet, etc. | ✓ |
| O63.9 | Long labor, unspecified | ✓ |
| O63.9 | Long labor, unspecified | ✓ |
Frequently asked questions
What is ICD-10-CM code O63?
O63 is an ICD-10-CM category covering Long labor. It contains 8 more specific diagnosis codes, 8 of which are billable.
Is O63 a billable code?
No — O63 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example O63.0 — Prolonged first stage (of labor)). 8 of the 8 codes under O63 are billable.
What codes fall under O63?
O63 includes O63.0, O63.0, O63.1, O63.1, O63.2, plus 3 more. See the full list with descriptions and billable status above.
More free billing tools: all ICD-10 categories · ICD-10 search · denial codes · Medicare fees
Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
Code the diagnosis right
Join providers across the country delivering modern virtual care with CareNiva. Free to start, ready in minutes.
100% Satisfaction Guaranteed — try it risk-free