FY2024
Effective from
- Inherited rules changed
MERRF syndrome
Billable diagnosis code
CDC/NCHS · FY2024progressive myoclonic epilepsy (G40.3-)
codes for associated conditions
histiocytosis X (chronic) (C96.6)
Ehlers-Danlos syndromes (Q79.6-)
Coverage 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 · 2015-10-01
Latest recorded change · FY2024
Effective from
MERRF syndrome
Billable diagnosis code
CDC/NCHS · FY2024| All editions | Effective from | Code history |
|---|---|---|
| FY2016 | 2015-10-01 | First observed |
| FY2017 | 2016-10-01 | Code-level rules changed |
| FY2018 | 2017-10-01 | No tabular change |
| FY2019 | 2018-10-01 | No tabular change |
| FY2020 | 2019-10-01 | Inherited rules changed |
| FY2020 · April | 2020-04-01 | No tabular change |
| FY2021 | 2020-10-01 | Inherited rules changed |
| FY2021 · 01-01 | 2021-01-01 | No tabular change |
| FY2022 | 2021-10-01 | Inherited 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 | Inherited 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 |
Historical mapping only; not an automatic code substitution.
Myoclonic epilepsy associated with ragged-red fibers
progressive myoclonic epilepsy (G40.3-)
histiocytosis X (chronic) (C96.6)
codes for associated conditions
All neoplasms, whether functionally active or not, are classified in Chapter 2. Appropriate codes in this chapter (i.e. E05.8, E07.0, E16-E31, E34.-) may be used as additional codes to indicate either functional activity by neoplasms and ectopic endocrine tissue or hyperfunction and hypofunction of endocrine glands associated with neoplasms and other conditions classified elsewhere.
Ehlers-Danlos syndromes (Q79.6-)
Other entries in the same category; these are not automatic substitutes.
| Code | Description | Category · further specificity required |
|---|---|---|
| E88.40 | Mitochondrial metabolism disorder, unspecified | Billable / specific |
| E88.41 | MELAS syndrome | Billable / specific |
| E88.43 | Disorders of mitochondrial tRNA synthetases | Billable / specific |
| E88.49 | Other mitochondrial metabolism disorders | Billable / specific |
Official titles and instructions are preserved in their source language. Official sources ↗
Code also · MERRF syndrome, if applicable (E88.42)