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ICD-10-CM 2027

ICD-10 code for gestational mammary abscess

O91.11

Abscess of breast associated with pregnancy

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic) › gestational mammary”. Page updated September 29, 2026.

About coding gestational mammary abscess

The ICD-10-CM code for gestational mammary abscess is O91.11 (Abscess of breast associated with pregnancy).

Within O91.1 (abscess of breast associated with pregnancy, the puerperium and lactation), O91.11 is specifically for abscess of breast associated with pregnancy. Related codes cover the puerperium (O91.12) and lactation (O91.13).

To report this condition, pick the subcode that matches the documentation: O91.111 (first trimester), O91.112 (second trimester), O91.113 (third trimester) and O91.119 (unspecified trimester).

Use an additional code to identify infection.

Common questions about gestational mammary abscess ICD-10 codes

What is the ICD-10 code for gestational mammary abscess?

O91.11 — Abscess of breast associated with pregnancy (a header code; report a more specific subcode).

Is O91.11 billable?

No. O91.11 is a header code. Report one of its more specific subcodes instead.