Follicular lymphoma, unspecified, unspecified site

This code signifies a diagnosis of follicular lymphoma where the specific histological subtype (e.g., grade 1, 2, 3) has not been determined or documented, and the primary anatomical location of the lymphoma is also unknown. Follicular lymphoma is a common, slow-growing non-Hodgkin lymphoma originating from B-lymphocytes.

Use this code when the medical record clearly states a diagnosis of follicular lymphoma, but lacks documentation specifying the grade or the primary site of involvement. This is often applicable in initial diagnostic stages or when documentation is incomplete regarding these specific details.

• Avoid using this code if the grade (e.g., grade 1, 2, 3) or the specific site (e.g., lymph nodes of head, neck, and trunk) is documented; instead, use a more specific code.
• This code indicates both an unspecified type and an unspecified site; ensure both elements are truly unknown from the documentation before assigning.
• Query the provider for clarification on the grade and primary site if possible to allow for more specific coding.