Other mature T/NK-cell lymphomas, in remission

This code signifies a diagnosis of a mature T-cell or NK-cell lymphoma, excluding those with more specific ICD-10-CM codes, that is currently in remission. This category encompasses various rare and aggressive lymphomas originating from mature T-lymphocytes or natural killer cells. "In remission" indicates that the signs and symptoms of the lymphoma have significantly decreased or disappeared due to treatment.

Apply this code when documentation confirms a diagnosis of a mature T-cell or NK-cell lymphoma that does not have a more specific code, and the patient is currently in a state of remission. This would be used for follow-up encounters, surveillance, or when managing long-term effects after successful treatment. Documentation must explicitly state "remission" or "in remission" for the specified lymphoma type.

• Ensure the documentation clearly specifies "other" mature T/NK-cell lymphoma and explicitly states "in remission."
• Do not use this code if a more specific mature T/NK-cell lymphoma code (e.g., C84.0A, C84.1A) is applicable.
• Sequence this code as a secondary diagnosis if the patient is receiving treatment for a complication or sequela related to the past lymphoma.