Right Breast Mass ICD-10-CM Codes

What are Right Breast Mass ICD-10-CM Codes?

A right breast mass refers to an abnormal lump, swelling, or growth detected in the right breast. This mass can be benign (non-cancerous, such as fibroadenomas or cysts) or malignant (as in breast cancer or other malignant neoplasms). Precise ICD-10-CM coding ensures accurate documentation, diagnosis, and billing, helping clinicians determine the nature and severity of the condition, especially when supported by diagnostic imaging such as mammograms or ultrasounds.

In 2025, ICD-10 includes specific codes based on laterality (right or left breast), quadrant location (e.g., upper outer quadrant, lower inner quadrant), and the clinical nature of the finding (unspecified lump, inconclusive findings, etc.). This helps distinguish between a lump in the right breast, unspecified breast, or a mass in the left breast, aiding both diagnosis and management.

Below are the most current and commonly used ICD-10 codes for right breast mass cases, including detailed quadrant-level distinctions:

• N63.10 – Unspecified lump in right breast, unspecified quadrant
  Used when a lump in the right breast is detected, but the specific quadrant is not documented.
• N63.11 – Unspecified lump in right breast, upper outer quadrant
  Applies to masses located in the upper outer quadrant, a region where breast cancer is most commonly detected.
• N63.12 – Unspecified lump in right breast, upper inner quadrant
  Used when the mass is found in the upper inner quadrant of the right breast.
• N63.13 – Unspecified lump in right breast, lower outer quadrant
  Code for a lump identified in the lower outer quadrant, near the axillary tail.
• N63.14 – Unspecified lump in right breast, lower inner quadrant
  Used when the mass is located in the lower inner quadrant of the right breast.
• R92.1 – Mammographic microcalcification found on diagnostic imaging of right breast
  Used when mammography identifies microcalcifications, which may suggest early malignancy.
• R92.3 – Inconclusive mammogram of right breast
  Indicates that mammographic results are inconclusive, requiring additional follow-up to determine the nature of the findings.
• R92.8 – Other abnormal and inconclusive findings on diagnostic imaging of right breast
  Used when imaging reveals abnormal findings not specifically classified elsewhere.
• R93.1 – Abnormal findings on diagnostic imaging of right breast
  Covers general abnormalities noted during imaging that require further investigation.

Which Right Breast Mass ICD-10-CM Codes are billable?

All of the above ICD-10-CM codes are valid and billable as of 2025, ensuring that healthcare providers can accurately capture breast mass diagnoses in clinical and administrative records.

• N63.10 – N63.14: Billable depending on the quadrant where the unspecified lump or mass is located in the right breast.
• R92.1, R92.3, R92.8, R93.1: All codes related to diagnostic imaging abnormalities or inconclusive findings are billable.

Clinical information

• A right breast mass is an abnormal lump or swelling in the right breast tissue.
• It can be benign (non-cancerous) or malignant (cancerous).
• Benign causes include fibroadenomas, cysts, and adenomas.
• Malignant causes may involve breast cancer, necessitating timely evaluation and diagnosis.
• Additional symptoms could include changes in skin appearance, nipple discharge, or discomfort.
• Clinical assessment involves physical examination, imaging (mammogram, ultrasound), and potential biopsy.
• Early detection is crucial for appropriate management and treatment.
• Treatment depends on the underlying cause, potentially including surgery, chemotherapy, radiation, or hormone therapy.
• Regular breast self-exams and mammograms aid in early detection and monitoring.
• Women should promptly consult a healthcare professional if any breast changes or concerning symptoms arise.

Synonyms include

• Right breast lump
• Mass in the right breast
• Abnormal right breast finding
• Right breast tumor
• Right breast nodule