SEER is an authoritative source of information on cancer incidence and survival in the United States. SEER currently collects and publishes cancer incidence and survival data from population-based cancer registries covering approximately 30 percent of the U.S. population.
Lymph nodes (C770-C779) are the usual primary sites; however, involvement in other sites is possible. If you have confirmation that the only involved site is something other than the lymph nodes, then code to that primary site. See Module 7
For more information on this neoplasm, see the NCI website: http://www.cancer.gov/types/lymphoma/hp/adult-hodgkin-treatment-pdq or http://www.cancer.gov/types/lymphoma/patient/adult-hodgkin-treatment-pdq