vidual has two core features, or one suggestive  feature with one or more core features.
For possible major or mild neurocognitive disorder with Lewy bodies,  the individ-
ual has only one core feature, or one or more suggestive features.
1. Core diagnostic features: 
a. Fluctuating cognition with pronounced variations in attention and alertness.
b. Recurrent visual hallucinations that are well formed and detailed.
c. Spontaneous features of parkinsonism, with onset subsequent to the develop-
ment of cognitive decline.
2. Suggestive diagnostic features:
a. Meets criteria for rapid eye movement sleep behavior disorder.
b. Severe neuroleptic sensitivity.
D. The disturbance is not better explained by cerebrovascular disease, another neurode-
generative disease, the effects of a substance, or another mental, neurological, or sys-
temic disorder.
Coding note:  For probable major neurocognitive disorder with Lewy bodies, with behav-
ioral disturbance, code first 331.82 (G31.83) Lewy body disease, followed by 294.11
(F02.81)  probable major neurocognitive disorder with Lewy bodies, with behavioral distur-
bance. For probable major neurocognitive disorder with Lewy bodies, without behavioral
disturbance, code first 331.82 (G31.83)  Lewy body disease, followed by 294.10 (F02.80)
probable major neurocognitive disorder with Lewy bodies, without behavioral disturbance.
For possible major neurocognitive disorder with Lewy bodies, code 331.9 (G31.9)  possible
major neurocognitive disorder with Lewy bodies. ( Note:  Do not use the additional code for