Coding of the grade of differentiation (malignancy) of tumors, coded by a four-, three-, or two-tiered grading system, often using the score of a special grading system for certain tumor types
Legenda: Type L=leaf, S=specializable, A=abstract, D=deprecated. NullFlavor OTH (other) suggests text in originalText. HL7 V3: NullFlavors to appear in @nullFlavor attribute instead of @code.