S21.0
Non-billableOpen wound of breast
S21.0 is the ICD-10-CM code for Open wound of breast. It is a non-billable category code — use a more specific child code such as S21.00 for billing.
S00-T88 Injury, poisoning and certain other consequences of external causes
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.
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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