Chapter 2

C00–D49: Neoplasms

Neoplasms diagnostic classification updated for 2026.

All Codes Billable Only

Internal Codes

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C21.8|
Malignant neoplasm of overlapping sites of rectum, anus and anal canal
C22.0|
Liver cell carcinoma
C22.1|
Intrahepatic bile duct carcinoma
C22.2|
Hepatoblastoma
C22.3|
Angiosarcoma of liver
C22.4|
Other sarcomas of liver
C22.7|
Other specified carcinomas of liver
C22.8|
Malignant neoplasm of liver, primary, unspecified as to type
C22.9|
Malignant neoplasm of liver, not specified as primary or secondary
C23|
Malignant neoplasm of gallbladder
C24.0|
Malignant neoplasm of extrahepatic bile duct
C24.1|
Malignant neoplasm of ampulla of Vater
C24.8|
Malignant neoplasm of overlapping sites of biliary tract
C24.9|
Malignant neoplasm of biliary tract, unspecified
C25.0|
Malignant neoplasm of head of pancreas
C25.1|
Malignant neoplasm of body of pancreas
C25.2|
Malignant neoplasm of tail of pancreas
C25.3|
Malignant neoplasm of pancreatic duct
C25.4|
Malignant neoplasm of endocrine pancreas
C25.7|
Malignant neoplasm of other parts of pancreas
C25.8|
Malignant neoplasm of overlapping sites of pancreas
C25.9|
Malignant neoplasm of pancreas, unspecified
C26.0|
Malignant neoplasm of intestinal tract, part unspecified
C26.1|
Malignant neoplasm of spleen
C26.9|
Malignant neoplasm of ill-defined sites within the digestive system
C30.0|
Malignant neoplasm of nasal cavity
C30.1|
Malignant neoplasm of middle ear
C31.0|
Malignant neoplasm of maxillary sinus
C31.1|
Malignant neoplasm of ethmoidal sinus
C31.2|
Malignant neoplasm of frontal sinus
C31.3|
Malignant neoplasm of sphenoid sinus
C31.8|
Malignant neoplasm of overlapping sites of accessory sinuses
C31.9|
Malignant neoplasm of accessory sinus, unspecified
C32.0|
Malignant neoplasm of glottis
C32.1|
Malignant neoplasm of supraglottis
C32.2|
Malignant neoplasm of subglottis
C32.3|
Malignant neoplasm of laryngeal cartilage
C32.8|
Malignant neoplasm of overlapping sites of larynx
C32.9|
Malignant neoplasm of larynx, unspecified
C33|
Malignant neoplasm of trachea
C34.00|
Malignant neoplasm of unspecified main bronchus
C34.01|
Malignant neoplasm of right main bronchus
C34.02|
Malignant neoplasm of left main bronchus
C34.10|
Malignant neoplasm of upper lobe, unspecified bronchus or lung
C34.11|
Malignant neoplasm of upper lobe, right bronchus or lung
C34.12|
Malignant neoplasm of upper lobe, left bronchus or lung
C34.2|
Malignant neoplasm of middle lobe, bronchus or lung
C34.30|
Malignant neoplasm of lower lobe, unspecified bronchus or lung
C34.31|
Malignant neoplasm of lower lobe, right bronchus or lung
C34.32|
Malignant neoplasm of lower lobe, left bronchus or lung

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