E88 vs G71.21
E88 (Other and unspecified metabolic disorders) compared with G71.21 (Nemaline myopathy), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Can these codes be reported together?
Yes, when both are documented. G71.21 carries an Excludes2 note covering E88: “metabolic disorders (E70-E88)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| E88Other and unspecified metabolic disorders | G71.21Nemaline myopathy | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | E00-E89 — Endocrine, Nutritional and Metabolic Diseases (E00-E89) | G00-G99 — Diseases of the Nervous System (G00-G99) |
| Definition | Other and unspecified metabolic disorders is a non-billable ICD-10-CM category code (E88). | Nemaline myopathy is a billable ICD-10-CM diagnosis code (G71.21). |
| Use additional code | codes for associated conditions | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources