O42.91UpcomingCategory · further specificity required

Preterm premature rupture of membranes, unspecified as to length of time between rupture and onset of labor

Chapters 15 · Inherited instructions

Use additional code

code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.

Excludes 1

supervision of normal pregnancy (Z34.-)

Excludes 2 · 4

Chapters 15 · Pregnancy, childbirth and the puerperium (O00-O9A)

Excludes 2

mental and behavioral disorders associated with the puerperium (F53.-)
obstetrical tetanus (A34)
postpartum necrosis of pituitary gland (E23.0)
puerperal osteomalacia (M83.0)

More specific codes

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

Claims & coverage

When ICD-10-CM is required

For US diagnosis claims covered by HIPAA, ICD-10-CM is required from October 1, 2015.

Use the service date for outpatient/professional claims and the discharge date for hospital inpatient claims. Earlier encounters use ICD-9-CM; each individual code must also be valid for the applicable date.

Official coding guidelines → · CMS ↗

First observed · 2015-10-01

Code history

Latest recorded change · FY2024

ChangedUnchanged

FY2024

Effective from 2023-10-01

Inherited rules changed

Preterm premature rupture of membranes, unspecified as to length of time between rupture and onset of labor

Category — select a more specific code

CDC/NCHS · FY2024

All editions (19)

All editions	Effective from	Code history
FY2016	2015-10-01	First observed
FY2017	2016-10-01	Inherited rules changed
FY2018	2017-10-01	No tabular change
FY2019	2018-10-01	Inherited rules changed
FY2020	2019-10-01	No tabular change
FY2020 · April	2020-04-01	No tabular change
FY2021	2020-10-01	No tabular change
FY2021 · 01-01	2021-01-01	No tabular change
FY2022	2021-10-01	No tabular change
FY2022 · 04-01	2022-04-01	No tabular change
FY2023	2022-10-01	No tabular change
FY2023 · 04-01	2023-04-01	No tabular change
FY2024	2023-10-01	Inherited rules changed
FY2024 · 04-01	2024-04-01	No tabular change
FY2025	2024-10-01	No tabular change
FY2025 · 04-01	2025-04-01	No tabular change
FY2026	2025-10-01	No tabular change
FY2026 · April	2026-04-01	No tabular change
FY2027	2026-10-01	No tabular change

Code-level instructions

Inclusion terms

Premature rupture of membranes before 37 completed weeks of gestation

Inherited instructions

Chapters 15 · Pregnancy, childbirth and the puerperium (O00-O9A)

Excludes 1

supervision of normal pregnancy (Z34.-)

Excludes 2

mental and behavioral disorders associated with the puerperium (F53.-)
obstetrical tetanus (A34)
postpartum necrosis of pituitary gland (E23.0)
puerperal osteomalacia (M83.0)

Use additional code

code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.

Note

CODES FROM THIS CHAPTER ARE FOR USE ONLY ON MATERNAL RECORDS, NEVER ON NEWBORN RECORDS
Codes from this chapter are for use for conditions related to or aggravated by the pregnancy, childbirth, or by the puerperium (maternal causes or obstetric causes)
Trimesters are counted from the first day of the last menstrual period. They are defined as follows:
1st trimester- less than 14 weeks 0 days
2nd trimester- 14 weeks 0 days to less than 28 weeks 0 days
3rd trimester- 28 weeks 0 days until delivery

More specific codes

O42.911Preterm premature rupture of membranes, unspecified as to length of time between rupture and onset of labor, first trimesterBillable / specific O42.912Preterm premature rupture of membranes, unspecified as to length of time between rupture and onset of labor, second trimesterBillable / specific O42.913Preterm premature rupture of membranes, unspecified as to length of time between rupture and onset of labor, third trimesterBillable / specific O42.919Preterm premature rupture of membranes, unspecified as to length of time between rupture and onset of labor, unspecified trimesterBillable / specific

Official index references (1)

Pregnancy(single) (uterine) (1)

Pregnancy(single) (uterine) › complicated by(care of) (management affected by) › premature rupture of membranes › pre-term(before 37 completed weeks of gestation)Disease index

Related codes

Other entries in the same category; these are not automatic substitutes.

Code	Description	Category · further specificity required
O42.90	Premature rupture of membranes, unspecified as to length of time between rupture and onset of labor, unspecified weeks of gestation	Billable / specific
O42.92	Full-term premature rupture of membranes, unspecified as to length of time between rupture and onset of labor	Billable / specific

Official titles and instructions are preserved in their source language. Official sources ↗