10ICD Code Hub

O91

Header — not billable

Infections of breast associated with pregnancy, the puerperium and lactation

The ICD-10 code for infections of breast associated with pregnancy, the puerperium and lactation is O91.

O91 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 3 more specific codes below.

Clinical notes

Use additional code

This code represents an underlying condition. When a related manifestation is also present, coding convention calls for an additional code to be listed after this one.

  • code to identify infection

Documentation support

General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.

Child codes under O91

Related codes in this category