G71.21
✓ BillableNemaline myopathy
Diseases of the nervous system (G00-G99)
⚠️ Excludes2
inheritedRules inherited from parent codes.
Clinical Description
ICD-10-CM code G71.21 represents nemaline myopathy. This code falls under the Diseases of the nervous system (G00-G99) classification. It is a billable/specific code valid for HIPAA-covered transactions as of October 1, 2025 (FY2026). This code can be used to indicate a diagnosis for reimbursement purposes on insurance claims.
This is a 6-character code at the 5th level of specificity. This is the most specific code available in this subcategory.
Frequently Asked Questions
What is ICD-10 code G71.21?
ICD-10-CM code G71.21 is "Nemaline myopathy". It belongs to the category: Diseases of the nervous system (G00-G99).
Is G71.21 a billable ICD-10 code?
Yes, G71.21 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
Can G71.21 be coded with other codes?
G71.21 has 4 Excludes2 note(s). These conditions can be coded together if both are documented in the patient record.
Related Codes in G71.2
Other codes in the same category that may be relevant for differential coding:
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Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)