ICD-9-CM Diagnosis Code 200.31
Diagnosis Code: 200.31 (Raw: 20031)
Description: Marginal zone lymphoma, lymph nodes of head, face, and neck
Classification: International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM)
Fiscal Year: 2026 Reference
CMS Section 111 Status: Valid for reporting.
Overview & Historical Usage
ICD-9-CM code 200.31 is designated for Marginal zone lymphoma, lymph nodes of head, face, and neck. While superseded by ICD-10 for current healthcare encounters, it remains a recognized reference code for CMS Section 111 reporting, legacy claims adjudication, and historical clinical data analysis.
