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D38.4

Billable

Neoplasm of uncertain behavior of thymus

This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

A growth in the thymus gland (located in the upper chest) that cannot yet be classified as cancer or benign. The tumor's true nature requires further investigation.

Coding Tips

  • •Thymic tumors with uncertain behavior may be thymomas or thymic hyperplasia; ensure pathology report specifies the uncertain classification
  • •Document the size and location of the thymic mass, as these factors influence clinical management

Code Hierarchy

└D38Neoplasm of uncertain behavior of middle ear and respiratory and intrathoracic organs└D38.4Neoplasm of uncertain behavior of thymus
└D38.4Neoplasm of uncertain behavior of thymus

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