Long labor (O63) ICD-10-CM
The O63 code range covers long labor with 5 ICD-10-CM diagnosis codes. 4 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Codes in the O63 Range 5 codes · 4 billable
About the O63 Code Range
The ICD-10 code O63 series is designated for tracking cases of long or prolonged labor during childbirth. These codes cover various stages where labor delays occur, helping healthcare providers specify the exact nature of the extended labor process.
The ICD-10 code for long labor includes detailed subcodes for different clinical scenarios. O63.0 identifies a prolonged first stage of labor, commonly referred to as "failure to progress in first stage of labor" or "prolonged latent phase of labor." O63.1 applies to prolonged second stage labor, often noted as “failure to progress in the second stage” or issues related to poor maternal effort. O63.2 is used when there's a delayed delivery of the second twin or other multiple births, also associated with triplet pregnancies. Lastly, O63.9 covers unspecified long labor situations, which may include prolonged third stage labor or general failure to progress. Including synonyms for these conditions helps medical coders match clinical notes precisely with the correct ICD-10 codes.
Questions About This Page
How many billable codes are in the O63 range?
Of the 5 codes in this range, 4 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the O63 range classify?
The range classifies long labor. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
