Mediastnl (thymic) large B-cell lymphoma, intrathorac nodes

This code represents a rare and aggressive subtype of non-Hodgkin lymphoma originating from B-lymphocytes, specifically characterized by its primary involvement of the mediastinum, often associated with the thymus. It is distinguished by large B-cells and typically presents as a bulky mass within the chest cavity, affecting intrathoracic lymph nodes.

Use this code for patients diagnosed with primary mediastinal (thymic) large B-cell lymphoma, confirmed by pathology. Documentation should clearly indicate the specific subtype of large B-cell lymphoma and its primary location within the mediastinum, including involvement of intrathoracic lymph nodes.

• Ensure pathology reports explicitly state "primary mediastinal (thymic) large B-cell lymphoma" to support this specific code.
• Differentiate from other large B-cell lymphoma subtypes, such as diffuse large B-cell lymphoma, not otherwise specified, which would use a different code.
• Sequence this code as the primary diagnosis when it is the reason for the encounter, followed by any associated symptoms or complications.