FY2025
Effective from
- Title changed
Megalencephalic leukoencephalopathy with subcortical cysts
Previous title: Megaloencephalic leukoencephalopathy with subcortical cysts
Billable diagnosis code
CDC/NCHS · FY2025Coverage depends on the payer, service and applicable policy. A billable code does not guarantee payment.
For US diagnosis claims covered by HIPAA, ICD-10-CM is required from October 1, 2015.
Use the service date for outpatient/professional claims and the discharge date for hospital inpatient claims. Earlier encounters use ICD-9-CM; each individual code must also be valid for the applicable date.
Official coding guidelines → · CMS ↗First observed · 2023-10-01
Latest recorded change · FY2025
Effective from
Megalencephalic leukoencephalopathy with subcortical cysts
Previous title: Megaloencephalic leukoencephalopathy with subcortical cysts
Billable diagnosis code
CDC/NCHS · FY2025| All editions | Effective from | Code history |
|---|---|---|
| FY2024 | 2023-10-01 | Added |
| FY2024 · 04-01 | 2024-04-01 | No tabular change |
| FY2025 | 2024-10-01 | Title changed |
| FY2025 · 04-01 | 2025-04-01 | No tabular change |
| FY2026 | 2025-10-01 | No tabular change |
| FY2026 · April | 2026-04-01 | No tabular change |
| FY2027 | 2026-10-01 | No tabular change |
The official Tabular List has no additional instructions at this code level.
Review the instructions inherited from its parent categories below. Inherited instructions ↓
Historical assignments from the CDC conversion table support data retrieval. They do not authorize substituting a previous code for the current code.
Previous assignment: G93.49
Other entries in the same category; these are not automatic substitutes.
| Code | Description | Category · further specificity required |
|---|---|---|
| G93.40 | Encephalopathy, unspecified | Billable / specific |
| G93.41 | Metabolic encephalopathy | Billable / specific |
| G93.43 | Leukoencephalopathy with calcifications and cysts | Billable / specific |
| G93.44 | Adult-onset leukodystrophy with axonal spheroids | Billable / specific |
| G93.45 | Developmental and epileptic encephalopathy | Billable / specific |
| G93.49 | Other encephalopathy | Billable / specific |
Official titles and instructions are preserved in their source language. Official sources ↗