ICD-9-CM Volume 2 Index entries containing back-references to
299.1:
- Dementia 294.20

Heller's (infantile psychosis) (see also Psychosis, childhood) 299.1
- Disease, diseased - see also Syndrome
Heller's (see also Psychosis, childhood) 299.1
- Disorder - see also Disease
disintegrativeildhood 299.1
interactional psychotic (childhood) (see also Psychosis, childhood) 299.1
- Heller's disease or syndrome (infantile psychosis) (see also Psychosis, childhood) 299.1
- Psychosis 298.9

disintegrative, childhood (see also Psychosis, childhood) 299.1
interactional (childhood) (see also Psychosis, childhood) 299.1
symbiotic (childhood) (see also Psychosis, childhood) 299.1
- Syndrome - see also Disease
dementia-aphonia, of childhood (see also Psychosis, childhood) 299.1
Heller's (infantile psychosis) (see also Psychosis, childhood) 299.1