| E75.0 | GM2 gangliosidosis | NON-BILLABLE CODE |
| E75.00 | GM2 gangliosidosis, unspecified | BILLABLE CODE |
| E75.01 | Sandhoff disease | BILLABLE CODE |
| E75.02 | Tay-Sachs disease | BILLABLE CODE |
| E75.09 | Other GM2 gangliosidosis | BILLABLE CODE |
| E75.1 | Other and unspecified gangliosidosis | NON-BILLABLE CODE |
| E75.10 | Unspecified gangliosidosis | BILLABLE CODE |
| E75.11 | Mucolipidosis IV | BILLABLE CODE |
| E75.19 | Other gangliosidosis | BILLABLE CODE |
| E75.2 | Other sphingolipidosis | NON-BILLABLE CODE |
| E75.21 | Fabry (-Anderson) disease | BILLABLE CODE |
| E75.22 | Gaucher disease | BILLABLE CODE |
| E75.23 | Krabbe disease | BILLABLE CODE |
| E75.24 | Niemann-Pick disease | NON-BILLABLE CODE |
| E75.240 | Niemann-Pick disease type A | BILLABLE CODE |
| E75.241 | Niemann-Pick disease type B | BILLABLE CODE |
| E75.242 | Niemann-Pick disease type C | BILLABLE CODE |
| E75.243 | Niemann-Pick disease type D | BILLABLE CODE |
| E75.244 | Niemann-Pick disease type A/B | BILLABLE CODE |
| E75.248 | Other Niemann-Pick disease | BILLABLE CODE |
| E75.249 | Niemann-Pick disease, unspecified | BILLABLE CODE |
| E75.25 | Metachromatic leukodystrophy | BILLABLE CODE |
| E75.26 | Sulfatase deficiency | BILLABLE CODE |
| E75.27 | Pelizaeus-Merzbacher disease | BILLABLE CODE |
| E75.28 | Canavan disease | BILLABLE CODE |
| E75.29 | Other sphingolipidosis | BILLABLE CODE |
| E75.3 | Sphingolipidosis, unspecified | BILLABLE CODE |
| E75.4 | Neuronal ceroid lipofuscinosis | BILLABLE CODE |
| E75.5 | Other lipid storage disorders | BILLABLE CODE |
| E75.6 | Lipid storage disorder, unspecified | BILLABLE CODE |
