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Table of Neoplasms
appendix

Neoplasm, neoplastic: appendix

Site	Malignant, Primary	Malignant, Secondary	Ca in situ	Benign	Uncertain Behavior	Unspecified Behavior
—	C18.1	C78.5	D01.0	D12.1	D37.3	D49.0

Source: official CMS/NCHS ICD-10-CM Table of Neoplasms. Informational only.

Data current as of FY2026 CMS/NCHS release. Not affiliated with or endorsed by CMS, HHS, or NCHS.

ICD-10-CM

Diagnosis Codes Diagnosis Index External Causes Index Table of Drugs Table of Neoplasms Coding Guidelines

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