Extrnod mrgnl B-cell lymph mucosa-assoc lym tiss not remis

This code signifies a specific type of low-grade B-cell lymphoma that originates in extranodal sites, often in mucosal tissues like the stomach, salivary glands, or thyroid. It indicates that the disease is currently active and has not achieved a state of remission.

Use this code for patients diagnosed with MALT lymphoma who are undergoing initial treatment, surveillance, or have persistent disease. Documentation should clearly state the diagnosis of MALT lymphoma and explicitly indicate that the patient is not in remission. This code is appropriate when the disease is active and requires ongoing management.

• Ensure documentation specifies "not having achieved remission" to differentiate from codes indicating remission.
• Do not use this code if the patient is in complete or partial remission; use the appropriate remission code.
• Always sequence this code as the primary diagnosis when it is the reason for the encounter.