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O42

⚠ Non-billable (Header)

Premature rupture of membranes

Pregnancy, childbirth and the puerperium (O00-O9A)

⚠️ This is a category header code — not billable. Use a more specific child code below.

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✅ No additional coding notes for O42

Child Codes (3)

O42.0Premature rupture of membranes, onset of labor within 24 hours of ruptureO42.1Premature rupture of membranes, onset of labor more than 24 hours following ruptureO42.9Premature rupture of membranes, unspecified as to length of time between rupture and onset of labor

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Code Information

CodeO42
BillableNo — Header code
CategoryPregnancy, childbirth and the puerperium (O00-O9A)
Excludes10 rule(s)
Excludes20 note(s)
Child codes3

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)