2025 ICD-10-CM code C41.4

Malignant neoplasm of pelvic bones, sacrum, and coccyx.

Use additional codes from Chapter 4 to identify any functional activity associated with the neoplasm. If the neoplasm overlaps contiguous sites, use subcategory .8 unless a specific combination code exists.

Medical necessity is established by the presence of a malignant neoplasm of the pelvic bones, sacrum, or coccyx confirmed by diagnostic testing. Treatment is medically necessary to control the spread of the cancer and alleviate symptoms.

Characterized by pain, difficulty walking or sitting, pathological fractures, swelling/tenderness, fever, appetite loss, weakness, and weight loss.Potential spread to surrounding organs.Diagnosis involves imaging (X-ray, CT, MRI) and biopsy. Treatment, determined by TNM staging, includes surgical resection, chemotherapy, radiation therapy, and pain management.

In simple words: Cancer of the pelvic bones (hip bones), sacrum (base of the spine), and coccyx (tailbone). This is a rare type of cancer where abnormal cells grow and damage the bone tissue. It can spread quickly and is more common in people who have had radiation therapy, chemotherapy, or have certain genetic factors.

Malignant neoplasm affecting the pelvic bones, sacrum, and coccyx. This refers to the uncontrolled growth of cancerous cells within the bone tissue of these structures. It's characterized by the potential for rapid spread to surrounding tissues and is more prevalent in individuals with prior exposure to radiation therapy, chemotherapy, or with predisposing genetic factors.

Example 1: A 60-year-old male with a history of radiation therapy for prostate cancer presents with persistent pelvic pain and a pathological fracture of the ilium. Imaging reveals a malignant neoplasm of the pelvic bone., A 45-year-old female experiences increasing lower back pain and difficulty sitting. A CT scan reveals a malignant neoplasm of the sacrum., A 70-year-old female with a family history of bone cancer presents with a palpable mass in the coccyx region. Biopsy confirms a malignant neoplasm.

Documentation should include the location and morphology of the neoplasm, imaging findings (X-ray, CT, MRI), biopsy results, and TNM staging information. Any relevant history of radiation therapy, chemotherapy, or genetic predisposition should also be noted.

  • Payment Status: Active
  • Specialties:Oncology, Orthopedic Oncology, Radiation Oncology
  • Place of Service:Inpatient Hospital, Outpatient Hospital, Physician's Office
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