Mycosis fungoides, intrapelvic lymph nodes

This code signifies a diagnosis of Mycosis Fungoides, a type of cutaneous T-cell lymphoma, specifically when it has spread to or originated in the intrapelvic lymph nodes. It indicates systemic involvement beyond the skin, affecting lymph nodes located within the pelvic cavity.

Apply this code when documentation clearly states Mycosis Fungoides with confirmed involvement of intrapelvic lymph nodes, typically identified through imaging (e.g., CT, MRI, PET scan) or biopsy. This code is appropriate for staging purposes or when managing patients with advanced disease.

• Ensure physician documentation explicitly states "intrapelvic lymph nodes" and not just generalized lymph node involvement.
• Do not use this code for Mycosis Fungoides confined to the skin; use codes from the C84.0- category for cutaneous involvement.
• Consider sequencing this code after the primary diagnosis of Mycosis Fungoides if the intrapelvic involvement is a manifestation of the primary disease.