O42 — Premature rupture of membranes
Is O42 billable?
No — O42 is a non-billable header code. O42 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 18 billable codes beneath O42.
Billable codes under this header
- O42.00Premature rupture of membranes, onset of labor within 24 hours of rupture, unspecified weeks of gestation
- O42.02Full-term premature rupture of membranes, onset of labor within 24 hours of rupture
- O42.10Premature rupture of membranes, onset of labor more than 24 hours following rupture, unspecified weeks of gestation
- O42.12Full-term premature rupture of membranes, onset of labor more than 24 hours following rupture
- O42.90Premature rupture of membranes, unspecified as to length of time between rupture and onset of labor, unspecified weeks of gestation
- O42.92Full-term premature rupture of membranes, unspecified as to length of time between rupture and onset of labor
- O42.011Preterm premature rupture of membranes, onset of labor within 24 hours of rupture, first trimester
- O42.012Preterm premature rupture of membranes, onset of labor within 24 hours of rupture, second trimester
- O42.013Preterm premature rupture of membranes, onset of labor within 24 hours of rupture, third trimester
- O42.019Preterm premature rupture of membranes, onset of labor within 24 hours of rupture, unspecified trimester
- O42.111Preterm premature rupture of membranes, onset of labor more than 24 hours following rupture, first trimester
- O42.112Preterm premature rupture of membranes, onset of labor more than 24 hours following rupture, second trimester
- O42.113Preterm premature rupture of membranes, onset of labor more than 24 hours following rupture, third trimester
- O42.119Preterm premature rupture of membranes, onset of labor more than 24 hours following rupture, unspecified trimester
- O42.911Preterm premature rupture of membranes, unspecified as to length of time between rupture and onset of labor, first trimester
- O42.912Preterm premature rupture of membranes, unspecified as to length of time between rupture and onset of labor, second trimester
- O42.913Preterm premature rupture of membranes, unspecified as to length of time between rupture and onset of labor, third trimester
- O42.919Preterm premature rupture of membranes, unspecified as to length of time between rupture and onset of labor, unspecified trimester
O42 at a glance
| Code | O42 |
|---|---|
| Description | Premature rupture of membranes |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
How is O42 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to O42. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Pregnancy › complicated by › rupture › amnion (single) (uterine)
- Pregnancy › complicated by › rupture › membranes (single) (uterine)
Excludes1 — never code together — inherited from Chapter 15
The conditions below can never be reported together with O42 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- supervision of normal pregnancy (Z34.-)
Use additional code — inherited from Chapter 15
Report an additional code alongside O42 to fully describe the condition. O42 is sequenced first.
- code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.
Excludes2 — not included here — inherited from Chapter 15
The conditions below are not part of O42, but a patient may have both at the same time. When documentation supports it, O42 and the excluded code may both be reported.
What codes fall under O42? (3)
- O42.0Premature rupture of membranes, onset of labor within 24 hours of rupturenot billable
- O42.1Premature rupture of membranes, onset of labor more than 24 hours following rupturenot billable
- O42.9Premature rupture of membranes, unspecified as to length of time between rupture and onset of labornot billable
How long has O42 existed?
O42 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.