ICD-10-CM category
O42: Premature rupture of membranes
Codes under O42 (Premature rupture of membranes). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| O42.0 | Premature rupture of membranes, onset of labor within 24 hours of rupture | — |
| O42.0 | Premature rupture of membranes, onset of labor within 24 hours of rupture | — |
| O42.00 | Premature rupture of membranes, onset of labor within 24 hours of rupture, unspecified weeks of gestation | ✓ |
| O42.00 | Premature rupture of membranes, onset of labor within 24 hours of rupture, unspecified weeks of gestation | ✓ |
| O42.01 | Preterm premature rupture of membranes, onset of labor within 24 hours of rupture | — |
| O42.01 | Preterm premature rupture of membranes, onset of labor within 24 hours of rupture | — |
| O42.1 | Premature rupture of membranes, onset of labor more than 24 hours following rupture | — |
| O42.1 | Premature rupture of membranes, onset of labor more than 24 hours following rupture | — |
| O42.02 | Full-term premature rupture of membranes, onset of labor within 24 hours of rupture | ✓ |
| O42.02 | Full-term premature rupture of membranes, onset of labor within 24 hours of rupture | ✓ |
| O42.9 | Premature rupture of membranes, unspecified as to length of time between rupture and onset of labor | — |
| O42.9 | Premature rupture of membranes, unspecified as to length of time between rupture and onset of labor | — |
| O42.10 | Premature rupture of membranes, onset of labor more than 24 hours following rupture, unspecified weeks of gestation | ✓ |
| O42.10 | Premature rupture of membranes, onset of labor more than 24 hours following rupture, unspecified weeks of gestation | ✓ |
| O42.011 | Preterm premature rupture of membranes, onset of labor within 24 hours of rupture, first trimester | ✓ |
| O42.011 | Preterm premature rupture of membranes, onset of labor within 24 hours of rupture, first trimester | ✓ |
| O42.11 | Preterm premature rupture of membranes, onset of labor more than 24 hours following rupture | — |
| O42.11 | Preterm premature rupture of membranes, onset of labor more than 24 hours following rupture | — |
| O42.012 | Preterm premature rupture of membranes, onset of labor within 24 hours of rupture, second trimester | ✓ |
| O42.012 | Preterm premature rupture of membranes, onset of labor within 24 hours of rupture, second trimester | ✓ |
| O42.12 | Full-term premature rupture of membranes, onset of labor more than 24 hours following rupture | ✓ |
| O42.12 | Full-term premature rupture of membranes, onset of labor more than 24 hours following rupture | ✓ |
| O42.013 | Preterm premature rupture of membranes, onset of labor within 24 hours of rupture, third trimester | ✓ |
| O42.013 | Preterm premature rupture of membranes, onset of labor within 24 hours of rupture, third trimester | ✓ |
| O42.019 | Preterm premature rupture of membranes, onset of labor within 24 hours of rupture, unspecified trimester | ✓ |
| O42.019 | Preterm premature rupture of membranes, onset of labor within 24 hours of rupture, unspecified trimester | ✓ |
| O42.90 | Premature rupture of membranes, unspecified as to length of time between rupture and onset of labor, unspecified weeks of gestation | ✓ |
| O42.90 | Premature rupture of membranes, unspecified as to length of time between rupture and onset of labor, unspecified weeks of gestation | ✓ |
| O42.91 | Preterm premature rupture of membranes, unspecified as to length of time between rupture and onset of labor | — |
| O42.91 | Preterm premature rupture of membranes, unspecified as to length of time between rupture and onset of labor | — |
| O42.92 | Full-term premature rupture of membranes, unspecified as to length of time between rupture and onset of labor | ✓ |
| O42.92 | Full-term premature rupture of membranes, unspecified as to length of time between rupture and onset of labor | ✓ |
| O42.111 | Preterm premature rupture of membranes, onset of labor more than 24 hours following rupture, first trimester | ✓ |
| O42.111 | Preterm premature rupture of membranes, onset of labor more than 24 hours following rupture, first trimester | ✓ |
| O42.112 | Preterm premature rupture of membranes, onset of labor more than 24 hours following rupture, second trimester | ✓ |
| O42.112 | Preterm premature rupture of membranes, onset of labor more than 24 hours following rupture, second trimester | ✓ |
| O42.113 | Preterm premature rupture of membranes, onset of labor more than 24 hours following rupture, third trimester | ✓ |
| O42.113 | Preterm premature rupture of membranes, onset of labor more than 24 hours following rupture, third trimester | ✓ |
| O42.119 | Preterm premature rupture of membranes, onset of labor more than 24 hours following rupture, unspecified trimester | ✓ |
| O42.119 | Preterm premature rupture of membranes, onset of labor more than 24 hours following rupture, unspecified trimester | ✓ |
| O42.911 | Preterm premature rupture of membranes, unspecified as to length of time between rupture and onset of labor, first trimester | ✓ |
| O42.911 | Preterm premature rupture of membranes, unspecified as to length of time between rupture and onset of labor, first trimester | ✓ |
| O42.912 | Preterm premature rupture of membranes, unspecified as to length of time between rupture and onset of labor, second trimester | ✓ |
| O42.912 | Preterm premature rupture of membranes, unspecified as to length of time between rupture and onset of labor, second trimester | ✓ |
| O42.913 | Preterm premature rupture of membranes, unspecified as to length of time between rupture and onset of labor, third trimester | ✓ |
| O42.913 | Preterm premature rupture of membranes, unspecified as to length of time between rupture and onset of labor, third trimester | ✓ |
| O42.919 | Preterm premature rupture of membranes, unspecified as to length of time between rupture and onset of labor, unspecified trimester | ✓ |
| O42.919 | Preterm premature rupture of membranes, unspecified as to length of time between rupture and onset of labor, unspecified trimester | ✓ |
Frequently asked questions
What is ICD-10-CM code O42?
O42 is an ICD-10-CM category covering Premature rupture of membranes. It contains 48 more specific diagnosis codes, 36 of which are billable.
Is O42 a billable code?
No — O42 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 O42.0 — Premature rupture of membranes, onset of labor within 24 hours of rupture). 36 of the 48 codes under O42 are billable.
What codes fall under O42?
O42 includes O42.0, O42.0, O42.00, O42.00, O42.01, plus 43 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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