D24.1

Benign neoplasm of right breast

Benign neoplasm of the right breast (D24.1) refers to a non-cancerous growth or tumor located within the mammary tissue of the right breast. These neoplasms are characterized by cellular proliferation that is localized and does not invade adjacent tissues or metastasize to distant sites. The most common clinical entity within this category is a fibroadenoma, which typically presents as a smooth, rubbery, and highly mobile mass, often occurring in women between the ages of 15 and 35. Other histological types include intraductal papillomas, lipomas, hamartomas, and benign phyllodes tumors. While these growths are not malignant, they require definitive diagnosis through triple assessment—clinical examination, imaging (such as mammography or ultrasonography), and histopathological confirmation (via fine-needle aspiration or core needle biopsy)—to distinguish them from breast cancer. Treatment may involve conservative observation (watchful waiting) or surgical excision if the mass is large, growing, or causing significant symptomatic distress.

Clinical Symptoms

  • Palpable, firm, or rubbery lump in the right breast
  • Painless mass (most common) or localized mastalgia
  • Nipple discharge, which may be clear, serous, or bloody (especially in intraductal papillomas)
  • Increased mobility of the lump within the breast tissue
  • Visible change in the contour or shape of the right breast
  • Sensation of fullness or heaviness in the right breast
  • Skin dimpling or puckering (less common than in malignancy but possible with certain benign lesions)
  • Axillary lymphadenopathy (rarely associated with benign neoplasms, usually requiring further investigation)

Common Causes

  • Hormonal sensitivity, particularly to estrogen and progesterone fluctuations
  • Reproductive history, including early menarche or late menopause
  • Use of oral contraceptive pills or hormone replacement therapy (HRT)
  • Genetic predisposition or family history of benign breast disease
  • Dietary factors, including high consumption of methylxanthines (found in coffee/tea)
  • Obesity and metabolic syndrome affecting systemic estrogen levels
  • Prior history of breast trauma or biopsy leading to fat necrosis (clinically mimicking neoplasm)

Documentation & Coding Tips

Explicitly state the laterality and specific location within the breast tissue for all benign neoplasms to ensure accurate code selection.

Example: Patient presents for follow-up of a palpable mass in the right breast, upper outer quadrant. Clinical exam and ultrasound correlate to a 2cm stable mass. Diagnosis: Benign neoplasm of the right breast, upper outer quadrant, consistent with fibroadenoma. Plan: Observation with repeat imaging in 6 months. Billing focus: Laterality (right) and specific quadrant. Risk adjustment: Supports HCC coding if histological confirmation of benign behavior is documented.

Billing Focus: Laterality and quadrant specificity.

Incorporate pathology results when available to differentiate between types of benign neoplasms such as fibroadenomas, lipomas, or hemangiomas.

Example: Biopsy results from the right breast lesion at the 3 o clock position confirm a benign fibroadenoma. No evidence of atypia or malignancy. Diagnosis: Benign neoplasm of right breast (D24.1). Billing focus: Histological confirmation of benign status. Risk adjustment: Validates the use of a benign neoplasm code over an uncertain behavior code.

Billing Focus: Pathological confirmation.

Document the size and any changes in the dimensions of the neoplasm over time to justify medical necessity for surgical intervention if planned.

Example: Right breast mass has increased from 1.5cm to 2.5cm over the last 12 months. Patient reports associated localized discomfort. Diagnosis: Growing benign neoplasm of right breast. Billing focus: Change in clinical status. Risk adjustment: Documents the progression of a chronic benign condition.

Billing Focus: Clinical progression and size.

Reference BI-RADS classification from radiology reports within the clinical note to provide standardized diagnostic support.

Example: Mammogram and ultrasound categorized the right breast finding as BI-RADS 2 (Benign). Findings are consistent with a benign intramammary lymph node or stable fibroadenoma. Diagnosis: Benign neoplasm of right breast. Billing focus: Diagnostic imaging alignment. Risk adjustment: Uses standardized clinical language to support the diagnosis.

Billing Focus: BI-RADS classification.

Specify the presence or absence of symptoms like pain, nipple discharge, or skin changes to determine the level of medical decision making.

Example: Patient complains of cyclical mastalgia localized to the site of the known benign neoplasm in the right breast. No nipple discharge or skin retraction noted. Diagnosis: Symptomatic benign neoplasm of right breast. Billing focus: Symptom association. Risk adjustment: Symptom documentation increases the complexity of the encounter.

Billing Focus: Symptomatic vs asymptomatic status.

Relevant CPT Codes