O91
Non-billableInfections 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
What this means — in plain language
MedlinePlus · NIHWhat are breast diseases? Breast diseases include various conditions and changes in your breast. Most women experience breast changes at some time. Your age, hormone levels, and medicines you take may cause lumps, bumps, and discharges of fluids that are not breast milk. Although many women fear cancer , most breast changes are benign, meaning they are not cancer. These breast changes are known as benign breast…
Read more about Breast Diseases at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Use additional code
- •code to identify infection
Conditions mapped to this code
MedlinePlus · NIHPlain-language health-topic references grounded in MedlinePlus (NIH/NLM).
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
Look up another ICD-10 code or condition