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O91.11

⚠ Non-billable (Header)

Abscess of breast associated with pregnancy

Pregnancy, childbirth and the puerperium (O00-O9A)

⚠️ This is a category header code — not billable. Use a more specific child code below.

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Also Known As

Gestational mammary abscessGestational purulent mastitisGestational subareolar abscess
✅ No additional coding notes for O91.11

Child Codes (4)

O91.111Abscess of breast associated with pregnancy, first trimesterO91.112Abscess of breast associated with pregnancy, second trimesterO91.113Abscess of breast associated with pregnancy, third trimesterO91.119Abscess of breast associated with pregnancy, unspecified trimester

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Code Information

CodeO91.11
BillableNo — Header code
ParentO91.1
CategoryPregnancy, childbirth and the puerperium (O00-O9A)
Excludes10 rule(s)
Excludes20 note(s)
Child codes4

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)