Appendix: B: Comparison of ICD-O-3, ICD-10-CM, ICD-10 and ICD-9-CM
The tables below show the codes for each of the following coding systems: ICD-O-3 (used by cancer registrars), ICD-10-CM, ICD-10 and ICD-9-CM. These are to be used as a reference only.
For a more detailed list, see the Conversion Files at https://seer.cancer.gov/tools/conversion/
- Lip, Oral Cavity and Pharynx (C00-C14)
- Digestive Organs (C15-C26)
- Respiratory System and Intrathoracic Organs (C30-C39)
- Coding for Bones, Joints and Articular Cartilage (C40-C41)
- Skin (Melanoma, Merkel Cell, and Other Skin Histologies) (C43, C44, C4a)
- Kaposi Sarcoma (9140)
- Peripheral Nerves, Retroperitoneum, Peritoneum, and Soft Tissues (C47, C48, C49)
- Breast and Female Genital Organs (C50 – C58)
- Male Genital Organs (C60-C63)
- Urinary Tract (C64-C68)
- Eye, Brain and Other Parts of the Central Nervous System (C69-C72)
- Thyroid, Other Endocrine Glands, and Ill-defined Sites (C73-C76)
- Lymph Nodes, Secondary Cancers & Unknown Primary Site (C77-80)
- Reportable Benign (/0 or /1) Neoplasms
Lip, Oral Cavity and Pharynx (C00-C14)
ICD-O-3 Code |
ICD-O-3 Description |
ICD-10-CM |
ICD-10 |
ICD-9-CM |
C00_ |
Lip |
C00.- |
C00.- |
140.- |
C019 |
Base of Tongue |
C01 |
C01 |
141.0 |
C02_ |
Other and Unspecified parts of tongue |
C02.- |
C02.- |
141.- |
C03_ |
Gum |
C03.- |
C03.- |
143.- |
C04_ |
Floor of Mouth |
C04.- |
C04.- |
144.- |
C05_ |
Palate |
C05.- |
C05.- |
145.2-145.5 |
C06_ |
Other and unspecified parts of mouth |
C06.0, C06.1, C06.2, C06.8-, C06.9 |
C06.0, C06.1, C06.2, C06.9 |
145.0, 145.1, 145.6, 145.9 |
C079 |
Parotid Gland |
C07 |
C07 |
142.0 |
C08_ |
Other and unspecified major salivary glands |
C08.- |
C08.- |
141.1, 142.8, 142.9 |
C09_ |
Tonsil |
C09.- |
C09.- |
146.0-146.2 |
C10_ |
Oropharynx |
C10.- |
C10.- |
146.3-146.9 |
C11_ |
Nasopharynx |
C11.- |
C11.- |
147.- |
C129 |
Pyriform sinus |
C12 |
C12 |
148.1 |
C13_ |
Hypopharynx |
C13.- |
C13.- |
148.0, 148.2, 148.3, 148.8, 148.9 |
C14_ |
Other and ill-defined sites in lip, oral cavity and pharynx |
C14.- |
C14.- |
149.- |
Digestive Organs (C15-C26)
ICD-O-3 Code |
ICD-O-3 Description |
ICD-10-CM |
ICD-10 |
ICD-9-CM |
C15_ |
Esophagus |
C15.- |
C15.- |
150.- |
C16_ |
Stomach |
C16.- |
C16.- |
151.- |
C17_ |
Small intestine |
C17.- |
C17.- |
152.- |
C18_ |
Colon |
C18.- |
C18.- |
153.- |
C199 |
Rectosigmoid junction |
C19 |
C19 |
154.0 |
C209 |
Rectum |
C20 |
C20 |
154.1 |
C21_ |
Anus and anal canal |
C21.- |
C21.- |
154.- |
C220 |
Liver |
C22.- |
C22.- |
155.0 |
C221 |
Intrahepatic bile duct |
C22.1 |
C22.1 |
155.1 |
C239 |
Gallbladder |
C23 |
C23 |
156.0 |
C24_ |
Other and unspecified parts of the Biliary tract |
C24.- |
C24.- |
156.- |
C25_ |
Pancreas |
C25.- |
C25.- |
157.- |
C26_ |
Other ill-defined digestive organs |
C26.- |
C26.- |
159.- |
Respiratory System and Intrathoracic Organs (C30-C39)
ICD-O-3 Code |
ICD-O-3 Description |
ICD-10-CM |
ICD-10 |
ICD-9-CM |
C30_ |
Nasal Cavity and Middle Ear |
C30. |
C30.- |
160.- |
C31_ |
Accessory Sinuses |
C31. |
C31.- |
160.- |
C32_ |
Larynx |
C32. |
C32.- |
161.0 |
C339 |
Trachea |
C33 |
C33 |
162 |
C34_ |
Lung |
C34. |
C34.- |
162.- |
C379 |
Thymus |
C37 |
C37 |
164.0 |
C38_ |
Heart, Mediastinum |
C38.- |
C38.- |
164.- |
C39_ |
Other and ill-defined sites within respiratory system and intrathoracic organs |
C39.- |
C39.- |
165.- |
Coding for Bones, Joints and Articular Cartilage (C40-C41)
ICD-O-3 Code |
ICD-O-3 Description |
ICD-10-CM |
ICD-10 |
ICD-9-CM |
C40_ |
Bones, joints, and articular cartilage of the limb |
C40.- |
C40.- |
170.- |
C41_ |
Bones, joints and articular cartilage of other/ unspecified sites |
C41.- |
C41.- |
171.- |
Skin (Melanoma, Merkel Cell, and Other Skin Histologies) (C43, C44, C4a)
ICD-O-3 Code |
ICD-O-3 Description |
ICD-10-CM |
ICD-10 |
ICD-9-CM |
C44_ |
Melanoma skin |
C43.- |
C43._ |
172.- |
C44_ |
Other skin histologies |
C44.- |
C44._ |
173.- |
C44_ |
Other skin histologies |
C4a.- |
C44._ |
209.3- |
Kaposi Sarcoma (9140)
ICD-O-3 Code |
ICD-O-3 Description |
ICD-10-CM |
ICD-10 |
ICD-9-CM |
C44_ |
KS of skin |
C46.0 |
C46.1 |
176.1 |
C49_ |
KS of soft tissue |
C46.1 |
C46.1 |
176.1 |
C05_ |
KS of palate |
C46.2 |
C46.2 |
176.2 |
C77_ |
KS of lymph nodes |
C46.3 |
C46.3 |
176.5 |
|
KS of GI sites |
C46.4 |
C46.7 |
176.4 |
C34_ |
KS of Lung |
C46.5 |
C46.7 |
176.8 |
|
KS of multiple organs |
C46.9 |
C46.8 |
176.8 |
C449 |
KS of unspecified site |
C46.9 |
C46.9 |
176.9 |
Peripheral Nerves, Retroperitoneum, Peritoneum, and Soft Tissues (C47, C48, C49)
ICD-O-3 Code |
ICD-O-3 Description |
ICD-10-CM |
ICD-10 |
ICD-9-CM |
C47_ |
Peripheral nerves and autonomous nervous system |
C47.- |
C47.- |
171.- |
C48_ |
Retroperitoneum and Peritoneum |
C48.- |
C48.- |
158.- |
C49_ |
Connective, subcutaneous and other soft tissues |
C49.- |
C49.- |
171.- |
Breast and Female Genital Organs (C50 – C58)
ICD-O-3 Code |
ICD-O-3 Description |
ICD-10-CM |
ICD-10 |
ICD-9-CM |
C50_ |
Breast |
C50.- |
C50.- |
174.- |
C51_ |
Vulva |
C51.- |
C51.- |
184.- |
C529 |
Vagina |
C52 |
C52 |
184.0 |
C53_ |
Cervix Uteri |
C53.- |
C53.- |
180.- |
C54_ |
Corpus Uteri |
C54.- |
C54.- |
182.- |
C559 |
Uterus, NOS |
C55 |
C55 |
179 |
C569 |
Ovary |
C56.- |
C56 |
183.0 |
C57_ |
Other & unspecified female genital organs |
C57.- |
C57 |
183.- |
C589 |
Placenta |
C58 |
C58 |
181 |
Male Genital Organs (C60-C63)
ICD-O-3 Code |
ICD-O-3 Description |
ICD-10-CM |
ICD-10 |
ICD-9-CM |
C60_ |
Penis |
C60.- |
C60.- |
187.1-187.4 |
C619 |
Prostate |
C61 |
C61 |
185 |
C62_ |
Testis |
C62.- |
C62.- |
186._ |
C63 |
Other unspecified male genital organs |
C63.- |
C63.- |
187.5-187.9 |
Urinary Tract (C64-C68)
ICD-O-3 Code |
ICD-O-3 Description |
ICD-10-CM |
ICD-10 |
ICD-9-CM |
C649 |
Kidney |
C64_ |
C64 |
189.0 |
C659 |
Renal pelvis |
C65_ |
C65 |
189.1 |
C669 |
Ureter |
C66_ |
C66 |
189.2 |
C67_ |
Bladder |
C67_ |
C67_ |
188._ |
C68_ |
Other and unspecified urinary organs |
C68_ |
C68_ |
189.3, 189.4, 189.8, 189.9 |
Eye, Brain and Other Parts of the Central Nervous System (C69-C72)
ICD-O-3 Code |
ICD-O-3 Description |
ICD-10-CM |
ICD-10 |
ICD-9-CM |
C69_ |
Eye and Adnexa |
C69.- |
C69.- |
190.- |
C70_ |
Meninges |
C70.- |
C70.- |
192.- |
C71_ |
Brain |
C71.- |
C71.- |
191.- |
C72_ |
Spinal cord, cranial nerves, and other parts of the central nervous system |
C72.- |
C72.- |
192.- |
Thyroid, Other Endocrine Glands, and Ill-defined Sites (C73-C76)
ICD-O-3 Code |
ICD-O-3 Description |
ICD-10-CM |
ICD-10 |
ICD-9-CM |
C739 |
Thyroid gland |
C73 |
C73 |
193 |
C74_ |
Adrenal gland |
C74.- |
C74.- |
194.0 |
C75_ |
Other endocrine glands & related structures |
C75.- |
C75.- |
194.- |
C76_ |
Other and ill-defined sites |
C76.- |
C76.- |
195.- |
Lymph Nodes, Secondary Cancers & Unknown Primary Site (C77-80)
Description |
ICD-10-CM |
ICD-10 |
ICD-9-CM |
Secondary and unspecified malignant neoplasm of lymph nodes |
C77.- |
C77.- |
196.- |
Secondary malignant neoplasm of respiratory and digestive organs |
C78.0- |
C78.- |
197.- |
Secondary malignant neoplasm of other and unspecified site |
C79.- |
C79.- |
198.- |
Malignant neoplasm without specification of site |
C80.- |
C80 |
199.- |
Note: Lymph node involvement secondary to a primary cancer is recorded in staging for cancer registrars.
Reportable Benign (/0 or /1) Neoplasms
ICD-O-3 Code |
ICD-O-3 Description |
ICD-10-CM |
ICD-10 |
ICD-9-CM |
C70. _ |
Meninges |
D32.0 |
D32.0 |
225.2, 225.4 |
C710. _ |
Cerebrum |
D33.0 |
D33.0 |
225.0 |
C72. _ |
Spinal Cord, Cranial Nerves, & Other Parts of Central Nervous System |
D33.4 |
D33.4 |
225.1, 225.3, 225.8 |
C751 |
Pituitary gland |
D35.2 |
D35.2 |
227.3 |
C752 |
Craniopharyngeal duct |
D35.3 |
D35.3 |
227.3 |
C753 |
Pineal gland |
D35.4 |
D35.4 |
227.4 |
Updated: December 3, 2018