O42 – Premature rupture of membranes
ICD-10-CM 2027 diagnosis code · Maternal care related to the fetus and amniotic cavity and possible delivery problems
ICD-10-CM code
O42
- Code
O42(claims format:O42)- Description
- Premature rupture of membranes
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 15. Pregnancy, childbirth and the puerperium (O00-O9A)
- Block
- O30-O48 Maternal care related to the fetus and amniotic cavity and possible delivery problems
Billable codes under O42
O42 is a header code and cannot be used on claims. Choose the most specific code:
- O42.0 – Premature rupture of membranes, onset of labor within 24 hours of ruptureHeader (more codes below)
- O42.1 – Premature rupture of membranes, onset of labor more than 24 hours following ruptureHeader (more codes below)
- O42.9 – Premature rupture of membranes, unspecified as to length of time between rupture and onset of laborHeader (more codes below)
Index terms for O42
Entries in the ICD-10-CM alphabetic index that lead to this code:
Frequently asked questions
What is ICD-10 code O42?
O42 is the ICD-10-CM code for premature rupture of membranes, in the block O30-O48 (Maternal care related to the fetus and amniotic cavity and possible delivery problems).
Is O42 a billable code?
No. O42 is a header code with more specific child codes; report one of the billable codes listed above.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.