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O91

Non-billable

Infections of breast associated with pregnancy, the puerperium and lactation

O91 is the ICD-10-CM code for Infections of breast associated with pregnancy, the puerperium and lactation. It is a non-billable category code — use a more specific child code such as O91.0 for billing.

Status
Header (non-billable)
Chapter
O00-O9A
Subcodes
3
Edition
FY2026

O00-O9A Pregnancy, childbirth and the puerperium

Use additional code

  • •code to identify infection

Frequently asked questions

What is ICD-10 code O91?
O91 is the ICD-10-CM code for "Infections of breast associated with pregnancy, the puerperium and lactation". It falls under O00-O9A Pregnancy, childbirth and the puerperium.
Is O91 a billable code?
No — O91 is a non-billable header code. Use a more specific child code (such as O91.0) for billing.
What are the subcodes of O91?
O91 has 3 more specific child codes, including O91.0, O91.1, O91.2.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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