ICD-9-CM Diagnosis Code 209.33
Diagnosis Code: 209.33 (Raw: 20933)
Description: Merkel cell carcinoma of the upper limb
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 209.33 is designated for Merkel cell carcinoma of the upper limb. While superseded by ICD-10 for current healthcare encounters, it remains a recognized reference code for CMS Section 111 reporting, legacy claims adjudication, and historical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.
