D05.10 Intraductal carcinoma in situ of unspecified breast

ICD10CM code

#### Name of the Condition
- Intraductal carcinoma in situ of unspecified breast
- Often referred to as Ductal Carcinoma In Situ (DCIS)

#### Summary
- Ductal Carcinoma In Situ (DCIS) is a non-invasive breast cancer where abnormal cells are contained in the milk ducts of the breast. It is considered the earliest form of breast cancer and is usually found during a mammogram.

#### Causes
- The exact cause of DCIS is not known, but it involves genetic mutations in the DNA of ductal cells in the breast.
- Potential contributing factors include hormonal imbalances and genetic predispositions.

#### Risk Factors
- Age: More common in women over 50.
- Family history of breast cancer.
- Genetic mutations such as BRCA1 and BRCA2.
- Prolonged exposure to estrogen.
- A previous history of breast conditions such as atypical hyperplasia.

#### Symptoms
- DCIS often has no signs or symptoms.
- Sometimes, it may present as a lump or discharge from the nipple, but such occurrences are rare.

#### Diagnosis
- Mammography is the primary tool for diagnosing DCIS, often revealing calcifications.
- Further diagnosis may require a biopsy to examine the tissue under a microscope.

#### Treatment Options
- Surgery: Lumpectomy or mastectomy depending on the extent of DCIS.
- Radiation therapy often follows surgery to eliminate any remaining cancer cells.
- Hormonal therapy may be an option if the cancer cells have hormone receptors.

#### Prognosis and Follow-Up
- DCIS has an excellent prognosis with treatment, with a high survival rate.
- Regular follow-up with mammograms is crucial to monitor for recurrence.

#### Complications
- If left untreated, DCIS can progress to invasive breast cancer.
- Surgical and radiation treatments can have side effects like changes in breast appearance and skin irritation.

#### Lifestyle & Prevention
- Regular screening mammograms as recommended by healthcare providers.
- Maintaining a healthy lifestyle with diet and exercise to help reduce risk factors.

#### When to Seek Professional Help
- New lumps in the breast or underarm.
- Any change in the size or shape of the breast.
- Unusual nipple discharge or skin changes should prompt medical consultation.

#### Additional Resources
- [American Cancer Society](https://www.cancer.org/cancer/breast-cancer.html)
- [Breastcancer.org](https://www.breastcancer.org/)

#### Tips for Medical Coders
- Ensure the correct ICD-10 code D05.10 is used when the laterality of the breast is not specified.
- Avoid using codes for invasive cancer when DCIS is diagnosed, as it refers specifically to non-invasive cancer.

Medical Policies and Guidelines for Intraductal carcinoma in situ of unspecified breast

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