O47.1 False labor at or after 37 completed weeks of gestation

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applies from O47 False labor

Includes

• Braxton Hicks contractions
• threatened labor

Excludes1 (never code together)

• preterm labor (O60.-)

MS-DRG index

Defines the logic of DRG(s) 817-819 in MDC 14.

Approximate ICD-9-CM (GEMs)

• 644.13 Other threatened labor, antepartum condition or complication (approximate)

Medicare Code Edits (MCE v43.1 (April 2026))

• Maternity diagnoses (age 9 through 64): Age conflict edit. These diagnoses are clinically expected only in patients age 9 through 64.

Diagnosis Index entries for O47.1

• False › labor (pains) › at or after 37 completed weeks of gestation
• Pregnancy (single) (uterine) › complicated by (care of) (management affected by) › false labor (pains) › at or after 37 completed weeks of pregnancy
• Pregnancy (single) (uterine) › complicated by (care of) (management affected by) › threatened › labor › at or after 37 completed weeks of gestation
• Threatened › labor (without delivery) › at or after 37 completed weeks of gestation

Nearby codes

• O47 False labor
• O47.0 False labor before 37 completed weeks of gestation
• O47.00 False labor before 37 completed weeks of gestation, unspecified trimester
• O47.02 False labor before 37 completed weeks of gestation, second trimester
• O47.03 False labor before 37 completed weeks of gestation, third trimester
• O47.1 False labor at or after 37 completed weeks of gestation (this code)
• O47.9 False labor, unspecified