Q83

Non-billable

Congenital malformations of breast

Q83 is the ICD-10-CM code for Congenital malformations of breast. It is a non-billable category code — use a more specific child code such as Q83.0 for billing.

Status
Header (non-billable)
Chapter
Q00-Q99
Subcodes
6
Edition
FY2026

Q00-Q99 Congenital malformations, deformations and chromosomal abnormalities

What this means — in plain language

MedlinePlus · NIH

What 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.

Excludes2 — not included here

  • absence of pectoral muscle (Q79.8)
  • hypoplasia of breast (N64.82)
  • micromastia (N64.82)

Frequently asked questions

What is ICD-10 code Q83?
Q83 is the ICD-10-CM code for "Congenital malformations of breast". It falls under Q00-Q99 Congenital malformations, deformations and chromosomal abnormalities.
Is Q83 a billable code?
No — Q83 is a non-billable header code. Use a more specific child code (such as Q83.0) for billing.
What are the subcodes of Q83?
Q83 has 6 more specific child codes, including Q83.0, Q83.1, Q83.2.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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