Site-Specific Factor 1(Other CNS)

WHO Grade Classification

Note: Code the WHO Grade Classification as documented in the medical record for sites C70.1 and C70.9 only. For all other sites in this schema enter code 999.

Code	Description
010	Grade I
020	Grade II
030	Grade III
040	Grade IV
999	Clinically diagnosed/grade unknown Not documented in medical record Grade unknown, NOS