O42.191 ICD-10-CA code: Premature rupture of membranes, onset of labour after 24 hours, unspecified whether preterm or full term, delivered, with or without mention of antepartum…
O42.191 is the ICD-10-CA code for “Premature rupture of membranes, onset of labour after 24 hours, unspecified whether preterm or full term, delivered, with or without mention of antepartum condition” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
O42.191Premature rupture of membranes, onset of labour after 24 hours, unspecified whether preterm or full term, delivered, with or without mention of antepartum condition
Short description: PROM lab aft 24 hours unspec/deliv
ICD-10-CA · Canada · Also written O42191
Notes for O42.191
As CIHI prints them, with any note O42.191 takes from the headings above it.
Excludes
Conditions classified elsewhere.
- • with labour delayed by therapy (O42.2)From O42.19 Premature rupture of membranes, onset of labour after 24 hours, unspecified whether preterm or full term
- Certain diseases or injuries complicating pregnancy, childbirth, and the puerperium classified elsewhere:external causes (for mortality) (V,W,X,Y)injury, poisoning and certain other consequences of external causes (S00-T88.1, T88.6-T98)mental and behavioural disorders associated with the puerperium (F53.-)obstetrical tetanus (A34)postpartum necrosis of pituitary gland (E23.0)puerperal osteomalacia (M83.0)supervision of:• high-risk pregnancy (Z35.-)• normal pregnancy (Z34.-)From Chapter 15: Pregnancy, childbirth and the puerperium (O00-O99)
Note
- The codes included in this chapter are to be used for conditions related to or aggravated by the pregnancy, childbirth or by the puerperium (maternal causes or obstetric causes)From Chapter 15: Pregnancy, childbirth and the puerperium (O00-O99)
Where O42.191 sits
- 1ChapterChapter 15: Pregnancy, childbirth and the puerperium (O00-O99)
- 2Block O30-O48Maternal care related to the fetus and amniotic cavity and possible delivery problems
- 3Category O42Premature rupture of membranes
- 4Subcategory O42.1Premature rupture of membranes, onset of labour after 24 hours
- 5Subcategory O42.19Premature rupture of membranes, onset of labour after 24 hours, unspecified whether preterm or full term
- 6Valid code O42.191Premature rupture of membranes, onset of labour after 24 hours, unspecified whether preterm or full term, delivered, with or without mention of antepartum condition
Source and release
- Data release
- ICD-10-CA · FY 2026–2027
- Effective date
- Apr 1, 2026
- Publisher
- CIHI
This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does ICD-10-CA code O42.191 mean?
O42.191 is the ICD-10-CA code for “Premature rupture of membranes, onset of labour after 24 hours, unspecified whether preterm or full term, delivered, with or without mention of antepartum condition” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is O42.191 in ICD-10-CA?
O42.191 sits under O42.19 Premature rupture of membranes, onset of labour after 24 hours, unspecified whether preterm or full term, within O42.1 Premature rupture of membranes, onset of labour after 24 hours, within O42 Premature rupture of membranes, within O30-O48 Maternal care related to the fetus and amniotic cavity and possible delivery problems, within Chapter 15: Pregnancy, childbirth and the puerperium (O00-O99).
What coding notes apply to O42.191?
ICD-10-CA lists Excludes, Note notes for O42.191, including those from the headings it sits under. They are listed on this page with where each one comes from.
Which ICD-10-CA release does this page use?
It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.
Codes beside O42.191
View O42.19O42.193Premature rupture of membranes, onset of labour after 24 hours, unspecified whether preterm or full term, antepartum condition or complicationO42.199Premature rupture of membranes, onset of labour after 24 hours, unspecified whether preterm or full term, unspecified as to episode of care, or not applicable