O42.1 — Premature rupture of membranes, onset of labor more than 24 hours following rupture
Is O42.1 billable?
No — O42.1 is a non-billable header code. O42.1 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 6 billable codes beneath O42.1.
Billable codes under this header
- 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
- O42.111Preterm 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
O42.1 at a glance
| Code | O42.1 |
|---|---|
| Description | Premature rupture of membranes, onset of labor more than 24 hours following rupture |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
How is O42.1 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under O42, the nearest indexed parent of O42.1. Use them to find the family, then select the specific code.
- 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 O42.1 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 O42.1 to fully describe the condition. O42.1 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 O42.1, but a patient may have both at the same time. When documentation supports it, O42.1 and the excluded code may both be reported.
What codes fall under O42.1? (3)
- O42.10Premature rupture of membranes, onset of labor more than 24 hours following rupture, unspecified weeks of gestation
- O42.11Preterm premature rupture of membranes, onset of labor more than 24 hours following rupturenot billable
- O42.12Full-term premature rupture of membranes, onset of labor more than 24 hours following rupture
How long has O42.1 existed?
O42.1 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.