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N61.23

Billable

Granulomatous mastitis, bilateral breast

This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

A rare type of breast inflammation characterized by granuloma formation (collections of immune cells) affecting both breasts. The cause is often unknown.

Coding Tips

  • •Bilateral presentation is less common; confirm diagnosis with histopathology from both sides if clinically indicated
  • •Document systemic symptoms and any associated conditions that may suggest an underlying etiology

Code Hierarchy

└N61Inflammatory disorders of breast└N61.2Granulomatous mastitis└N61.23Granulomatous mastitis, bilateral breast
└N61.23Granulomatous mastitis, bilateral breast

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