S21.009A
BillableUnspecified open wound of unspecified breast, initial encounter
S21.009A is the ICD-10-CM code for Unspecified open wound of unspecified breast, initial encounter. It is a billable, specific code valid for reimbursement.
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
- What is ICD-10 code S21.009A?
- S21.009A is the ICD-10-CM code for "Unspecified open wound of unspecified breast, initial encounter". It falls under S00-T88 Injury, poisoning and certain other consequences of external causes.
- Is S21.009A a billable code?
- Yes — S21.009A is a billable, specific ICD-10-CM code valid for reimbursement.
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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