FY2024
Effective from
- Code-level rules changed
Other and unspecified encephalopathy
Category — select a more specific code
CDC/NCHS · FY2024For 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 · 2015-10-01
Latest recorded change · FY2024
Effective from
Other and unspecified encephalopathy
Category — select a more specific code
CDC/NCHS · FY2024| All editions | Effective from | Code history |
|---|---|---|
| FY2016 | 2015-10-01 | First observed |
| FY2017 | 2016-10-01 | No tabular change |
| FY2018 | 2017-10-01 | No tabular change |
| FY2019 | 2018-10-01 | No tabular change |
| FY2020 | 2019-10-01 | No tabular change |
| FY2020 · April | 2020-04-01 | No tabular change |
| FY2021 | 2020-10-01 | Code-level rules changed |
| FY2021 · 01-01 | 2021-01-01 | No tabular change |
| FY2022 | 2021-10-01 | Code-level rules changed |
| FY2022 · 04-01 | 2022-04-01 | No tabular change |
| FY2023 | 2022-10-01 | No tabular change |
| FY2023 · 04-01 | 2023-04-01 | No tabular change |
| FY2024 | 2023-10-01 | Code-level rules changed |
| FY2024 · 04-01 | 2024-04-01 | No tabular change |
| FY2025 | 2024-10-01 | No tabular change |
| 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 |
G93.40Encephalopathy, unspecifiedBillable / specificG93.41Metabolic encephalopathyBillable / specificG93.42Megalencephalic leukoencephalopathy with subcortical cystsBillable / specificG93.43Leukoencephalopathy with calcifications and cystsBillable / specificG93.44Adult-onset leukodystrophy with axonal spheroidsBillable / specificG93.45Developmental and epileptic encephalopathyBillable / specificG93.49Other encephalopathyBillable / specificOther entries in the same category; these are not automatic substitutes.
| Code | Description | Category · further specificity required |
|---|---|---|
| G93.0 | Cerebral cysts | Billable / specific |
| G93.1 | Anoxic brain damage, not elsewhere classified | Billable / specific |
| G93.2 | Benign intracranial hypertension | Billable / specific |
| G93.3 | Postviral and related fatigue syndromes | Category · further specificity required |
| G93.5 | Compression of brain | Billable / specific |
| G93.6 | Cerebral edema | Billable / specific |
| G93.7 | Reye's syndrome | Billable / specific |
| G93.8 | Other specified disorders of brain | Category · further specificity required |
| G93.9 | Disorder of brain, unspecified | Billable / specific |
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