Z85.850 Personal history of malignant neoplasm of thyroid

ICD10CM code

#### Name of the Condition
- Personal history of malignant neoplasm of thyroid

#### Summary
- This condition refers to an individual's medical history of having a malignant thyroid tumor. It indicates that the person has been previously diagnosed with thyroid cancer but currently is in remission following treatment.

#### Causes
- Thyroid cancer may develop due to genetic mutations, exposure to radiation, or unknown environmental factors. However, once the cancer has been treated, this ICD code pertains to the history, not active disease.

#### Risk Factors
- Risk factors for developing thyroid cancer (which relates to this history) include a family history of goiters or thyroid cancer, exposure to high radiation levels, and certain hereditary conditions.

#### Symptoms
- While the history of the condition signifies no current symptoms, prior symptoms might have included a neck lump, difficulty swallowing, hoarseness, or changes in voice.

#### Diagnosis
- This condition is used in documenting medical history. Previous thyroid cancer diagnosis would have been confirmed using a combination of ultrasound, fine needle aspiration, biopsy, and possibly blood tests assessing thyroid function.

#### Treatment Options
- There are no treatments for the historical aspect, but previous treatments for thyroid cancer may have included surgery, radioactive iodine therapy, thyroid hormone therapy, radiation therapy, or chemotherapy.

#### Prognosis and Follow-Up
- The prognosis after successful treatment can be very positive, especially for early-stage thyroid cancers. Regular follow-up visits with an endocrinologist or oncologist are crucial to monitor for any recurrence.

#### Complications
- Potential complications without proper follow-up can include recurrence of cancer or metastasis to other body parts.

#### Lifestyle & Prevention
- Maintaining a healthy lifestyle post-treatment, such as a balanced diet and regular exercise, can help improve recovery and overall health. Limiting exposure to radiation and monitoring for symptoms can aid in prevention.

#### When to Seek Professional Help
- Individuals should seek professional help if symptoms such as unexplained lumps, difficulty swallowing, or changes in voice appear, as these may be signs of recurrence.

#### Additional Resources
- American Thyroid Association (thyroid.org)
- National Cancer Institute (cancer.gov)
- ThyCa: Thyroid Cancer Survivors' Association (thyca.org)

#### Tips for Medical Coders
- Ensure proper use of Z85.850 to document a patient's past medical history of thyroid cancer rather than active disease.
- Avoid coding errors by distinguishing between history codes and active disease codes, ensuring accuracy in medical records.

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