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SEER Site Recode ICD-O-2 (4/15/2002) Definition

The information provided in this table is also available in an ASCII text file (semicolons are used as the delimiters).
To see how this variable is used in SEER publications and to read about other site recode variables, please see SEER Incidence Site Recode.

Site Group	ICD-O-2 Site	ICD-O-2 Histology (Type)	Recode
Oral Cavity and Pharynx
Lip	C000-C009	excluding 9590-9989, and sometimes 9050-9055, 9140+	20010
Tongue	C019-C029		20020
Salivary Gland	C079-C089		20030
Floor of Mouth	C040-C049		20040
Gum and Other Mouth	C030-C039, C050-C059, C060-C069		20050
Nasopharynx	C110-C119		20060
Tonsil	C090-C099		20070
Oropharynx	C100-C109		20080
Hypopharynx	C129, C130-C139		20090
Other Oral Cavity and Pharynx	C140, C142-C148		20100
Digestive System
Esophagus	C150-C159	excluding 9590-9989, and sometimes 9050-9055, 9140+	21010
Stomach	C160-C169		21020
Small Intestine	C170-C179		21030
Colon and Rectum
Colon excluding Rectum
Cecum	C180	excluding 9590-9989, and sometimes 9050-9055, 9140+	21041
Appendix	C181		21042
Ascending Colon	C182		21043
Hepatic Flexure	C183		21044
Transverse Colon	C184		21045
Splenic Flexure	C185		21046
Descending Colon	C186		21047
Sigmoid Colon	C187		21048
Large Intestine, NOS	C188-C189, C260		21049
Rectum and Rectosigmoid Junction
Rectosigmoid Junction	C199	excluding 9590-9989, and sometimes 9050-9055, 9140+	21051
Rectum	C209		21052
Anus, Anal Canal and Anorectum	C210-C212, C218		21060
Liver and Intrahepatic Bile Duct
Liver	C220	excluding 9590-9989, and sometimes 9050-9055, 9140+	21071
Intrahepatic Bile Duct	C221		21072
Gallbladder	C239		21080
Other Biliary	C240-C249		21090
Pancreas	C250-C259		21100
Retroperitoneum	C480		21110
Peritoneum, Omentum and Mesentery	C481-C482		21120
Other Digestive Organs	C268-C269, C488		21130
Respiratory System
Nose, Nasal Cavity and Middle Ear	C300-C301, C310-C319	excluding 9590-9989, and sometimes 9050-9055, 9140+	22010
Larynx	C320-C329		22020
Lung and Bronchus	C340-C349		22030
Pleura	C384		22050
Trachea, Mediastinum and Other Respiratory Organs	C339, C381-C383, C388, C390, C398, C399		22060
Bones and Joints	C400-C419	excluding 9590-9989, and sometimes 9050-9055, 9140+	23000
Soft Tissue including Heart	C380, C470-C479, C490-C499	excluding 9590-9989, and sometimes 9050-9055, 9140+	24000
Skin excluding Basal and Squamous
Melanoma of the Skin	C440-C449	8720-8790	25010
Other Non-Epithelial Skin	C440-C449	excluding 8000-8004, 8010-8045, 8050-8082, 8090-8110, 8720-8790, 9590-9989, and sometimes 9050-9055, 9140+	25020
Breast	C500-C509	excluding 9590-9989, and sometimes 9050-9055, 9140+	26000
Female Genital System
Cervix Uteri	C530-C539	excluding 9590-9989, and sometimes 9050-9055, 9140+	27010
Corpus and Uterus, NOS
Corpus Uteri	C540-C549	excluding 9590-9989, and sometimes 9050-9055, 9140+	27020
Uterus, NOS	C559		27030
Ovary	C569		27040
Vagina	C529		27050
Vulva	C510-C519		27060
Other Female Genital Organs	C570-C589		27070
Male Genital System
Prostate	C619	excluding 9590-9989, and sometimes 9050-9055, 9140+	28010
Testis	C620-C629		28020
Penis	C600-C609		28030
Other Male Genital Organs	C630-C639		28040
Urinary System
Urinary Bladder	C670-C679	excluding 9590-9989, and sometimes 9050-9055, 9140+	29010
Kidney and Renal Pelvis	C649, C659		29020
Ureter	C669		29030
Other Urinary Organs	C680-C689		29040
Eye and Orbit	C690-C699	excluding 9590-9989, and sometimes 9050-9055, 9140+	30000
Brain and Other Nervous System
Brain	C710-C719	excluding 9530-9539, 9590-9989, and sometimes 9050-9055, 9140+	31010
Cranial Nerves Other Nervous System	C710-C719	9530-9539	31040
	C700-C709, C720-C729	excluding 9590-9989, and sometimes 9050-9055, 9140+
Endocrine System
Thyroid	C739	excluding 9590-9989, and sometimes 9050-9055, 9140+	32010
Other Endocrine including Thymus	C379, C740-C749, C750-C759		32020
Lymphoma
Hodgkin Lymphoma
Hodgkin - Nodal	C024, C098-C099, C111, C142, C379, C422, C770-C779	9650-9667	33011
Hodgkin - Extranodal	All other sites		33012
Non-Hodgkin Lymphoma
NHL - Nodal	C024, C098-C099, C111, C142, C379, C422, C770-C779	9590-9595, 9670-9677, 9680-9688, 9690-9698, 9700-9717, 9823, 9827	33041
NHL - Extranodal	All sites except C024, C098-C099, C111, C142, C379, C422, C770-C779	9590-9595, 9670-9677, 9680-9688, 9690-9698, 9700-9717	33042
	All sites except C024, C098-C099, C111, C142, C379, C420-C422, C424, C770-C779	9823, 9827
Myeloma		9731-9732	34000
Leukemia
Lymphocytic Leukemia
Acute Lymphocytic Leukemia		9821, 9828	35011
Chronic Lymphocytic Leukemia	C420, C421, C424	9823	35012
Other Lymphocytic Leukemia		9820, 9822, 9824-9825, 9826	35013
Myeloid Leukemia
Acute Myeloid Leukemia		9840, 9861, 9866, 9867, 9871-9874	35021
Chronic Myeloid Leukemia		9863, 9868	35022
Other Myeloid Leukemia		9860, 9862, 9864	35023
Monocytic Leukemia
Acute Monocytic Leukemia		9891	35031
Chronic Monocytic Leukemia		9893	35032
Other Monocytic Leukemia		9890, 9892, 9894	35033
Other Leukemia
Other Acute Leukemia		9801, 9841, 9931, 9932	35041
Other Chronic Leukemia		9803, 9842	35042
Aleukemic, subleukemic and NOS		9800, 9802, 9804, 9830, 9850, 9870, 9880, 9900, 9910, 9930, 9940-9941	35043
	C420, C421, C424	9827
Mesothelioma +		9050-9055	36010
Kaposi Sarcoma +		9140	36020
Miscellaneous		9720-9723, 9740-9741, 9760-9764, 9950, 9960-9962, 9970, 9980-9984, 9989	37000
	C760-C768, C809	excluding 9590-9989, and sometimes 9050-9055, 9140+
	C420-C424
	C770-C779
Invalid	Site or histology code not within valid range or site code not found in this table.		99999

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+ The Site Recode variable can be created with or without Mesothelioma (9050-9055) and Kaposi Sarcoma (9140) as separate groupings. The table above documents both possibilities.