Non-specific code 2015 ICD-9-CM Diagnosis Code 164
Malignant neoplasm of thymus heart and mediastinum
  • 2015
  • Non-Billable Code

  • There are 6 ICD-9-CM codes below 164 that define this diagnosis in greater detail. Do not use this code on a reimbursement claim.
Clinical Information
  • Primary or metastatic malignant neoplasm involving the thymus. This category includes malignant thymomas, thymic lymphomas, primary thymic carcinomas, and metastatic carcinomas from other anatomic sites
  • The thymus is a small organ in your upper chest, under your breastbone. Before birth and during childhood, the thymus helps the body make a type of white blood cell. These cells help protect you from infections. Cancer of the thymus is rare. You are more likely to get it if you have other diseases such as myasthenia gravis, lupus or rheumatoid arthritis. Sometimes there are no symptoms. Other times, thymus cancer can cause
    • a cough that doesn't go away
    • chest pain
    • trouble breathing
    the most common treatment is surgery to remove the tumor. Other options include radiation and hormone therapy. nih: national cancer institute
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 164 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2015 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.