FY2025
Effective from
- Added
Developmental and epileptic encephalopathy
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 · 2024-10-01
Latest recorded change · FY2025
Effective from
Developmental and epileptic encephalopathy
Billable diagnosis code
CDC/NCHS · FY2025| All editions | Effective from | Code history |
|---|---|---|
| FY2025 | 2024-10-01 | Added |
| 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 |
Early infantile epileptic encephalopathy
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 |
| G93.42 | Megalencephalic leukoencephalopathy with subcortical cysts | Billable / specific |
| G93.43 | Leukoencephalopathy with calcifications and cysts | Billable / specific |
| G93.44 | Adult-onset leukodystrophy with axonal spheroids | Billable / specific |
| G93.49 | Other encephalopathy | Billable / specific |
Official titles and instructions are preserved in their source language. Official sources ↗
Code also · developmental and epileptic encephalopathy (G93.45)
Code also · developmental and epileptic encephalopathy (G93.45)