O42

Classification

Category:Pregnancy, childbirth and the puerperium

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Coding Guidance

O42 should not be used for reimbursement purposes as there are more specific codes below it that contain a greater level of detail.

Excludes 1

Z34

supervision of normal pregnancy

Excludes 2

F53

mental and behavioral disorders associated with the puerperium

A34

obstetrical tetanus

E23.0

postpartum necrosis of pituitary gland

M83.0

puerperal osteomalacia

Use Additional Code

From O00-O9A

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

More Specific Codes

O42.0

Premature rupture of membranes, onset of labor within 24 hours of rupture

O42.1

Premature rupture of membranes, onset of labor more than 24 hours following rupture

O42.9

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

External Resources

2025 ICD-10 guidelines from CMS.gov