| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Primary malignant neoplasm of colon | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of commissure of lip | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some |  | 
| Primary malignant neoplasm of common bile duct | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of conjunctiva of eye (disorder) | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of soft tissues | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some |  | 
| Primary malignant neoplasm of cornea of eye (disorder) | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of craniopharyngeal duct | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of cuboid | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of cystic duct | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of descending colon | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of diaphragm | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of dorsal surface of tongue | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of thoracic vertebral column | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some |  | 
| Primary malignant neoplasm of duodenum | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of ectopic female breast tissue (disorder) | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of ectopic male breast tissue | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of endocardium | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of endocervix | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of endometrium | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of epicardium | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of epididymis | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of epiglottis | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of ethmoid bone | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of ethmoidal sinus | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of eustachian tube | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of exocervix | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of extrahepatic bile ducts | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some |  | 
| Primary malignant neoplasm of eye, primary (disorder) | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some |  | 
| Primary malignant neoplasm of face | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of fallopian tube | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some |  | 
| Primary malignant neoplasm of false vocal cord | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some |  | 
| Primary malignant neoplasm of female breast | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of female genital organ | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of femur (disorder) | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of fibula | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of first cuneiform bone of foot | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of flank | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of floor of mouth | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of prepuce | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some |  | 
| Primary malignant neoplasm of frontal bone | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of frontal lobe | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of frontal sinus | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of fundus of stomach | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of gallbladder | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some |  | 
| Primary malignant neoplasm of gingival mucosa | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of glans penis | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some |  | 
| Primary malignant neoplasm of glottis | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of greater curvature of stomach | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of gum | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some |  | 
| Primary malignant neoplasm of hamate bone | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of hard palate | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some |  | 
| Primary malignant neoplasm of heart | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of hepatic flexure of colon | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of hilus of lung | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of hypopharyngeal aspect of aryepiglottic fold | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of hypopharyngeal aspect of interarytenoid fold | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of hypopharynx | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of ileum | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of ilium | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of inguinal region | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of inner aspect of lip | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of inner aspect of lower lip | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of inner aspect of upper lip | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of intra-abdominal organs | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of intrahepatic bile ducts | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of intrathoracic organs | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of ischium | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of isthmus of uterus | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of jaw | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of jejunum | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of junctional zone of tongue | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of kidney | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of labia majora | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of labia minora | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of lacrimal duct | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of lacrimal gland | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some |  | 
| Primary malignant neoplasm of large intestine | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of laryngeal aspect of aryepiglottic fold | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some |  | 
| Primary malignant neoplasm of laryngeal commissure | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of laryngeal surface of epiglottis | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of larynx | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some |  | 
| Primary malignant neoplasm of lateral portion of floor of mouth | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of lateral wall of oropharynx | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of lower lobe of left lung (disorder) | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of left upper lobe of lung | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of lesser curvature of stomach | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of lingual tonsil | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 2 | 
| Primary malignant neoplasm of lip | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some |  | 
| Malignant neoplasm of liver | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some |  | 
| Primary malignant neoplasm of long bone of upper limb | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of lower gum | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some |  | 
| Primary malignant neoplasm of lower inner quadrant of female breast | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of lower limb | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of lower outer quadrant of female breast | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of lumbar vertebral column | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of lunate bone | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of lung | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of main bronchus | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of major salivary gland | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of male breast | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 | 
| Primary malignant neoplasm of male genital organ | Associated morphology | False | Malignant neoplasm, primary | Inferred relationship | Some | 1 |