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HomeICD CodesICD-9 Code 649.81 - Onset (spontaneous) of labor after 37 completed weeks of gestation but before 39 completed weeks gestation, with delivery by (planned) cesarean section, delivered, with or without mention of antepartum condition
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ICD-9 Code 649.81 - Onset (spontaneous) of labor after 37 completed weeks of gestation but before 39 completed weeks gestation, with delivery by (planned) cesarean section, delivered, with or without mention of antepartum condition

Reviewed by Medicinsk Expert•Last updated: 2026-10-22•ICD Codes

ICD-9-CM Diagnosis Code 649.81

Diagnosis Code: 649.81 (Raw: 64981)

Description: Onset (spontaneous) of labor after 37 completed weeks of gestation but before 39 completed weeks gestation, with delivery by (planned) cesarean section, delivered, with or without mention of antepartum condition

Classification: International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM)

Fiscal Year: 2026 Reference

CMS Section 111 Status: Valid for reporting.

Overview & Historical Usage

ICD-9-CM code 649.81 is designated for Onset (spontaneous) of labor after 37 completed weeks of gestation but before 39 completed weeks gestation, with delivery by (planned) cesarean section, delivered, with or without mention of antepartum condition. While superseded by ICD-10 for current healthcare encounters, it remains a recognized reference code for CMS Section 111 reporting, legacy claims adjudication, and historical clinical data analysis.

Source: MedlinePlus, National Library of Medicine

MedlinePlus brings together authoritative health information from the National Library of Medicine (NLM), the National Institutes of Health (NIH), and other government agencies and health-related organizations.