ICD-10-CM Alphabetic Index · FY 2027 10 Entries

Myotonia in the ICD-10-CM Index ICD-10-CM

The main term Myotonia (acquisita) (intermittens) carries 10 index entries pointing to 6 ICD-10-CM codes. The default entry is M62.89, the code the bare main term maps to; every indented line below refines the term by site, cause, or type. Verify any candidate code in the Tabular List before using it.

✓ Built from the official CMS FY 2027 index fileEffective Oct 1, 2026 – Sep 30, 2027
10
Index Entries
6
Codes Referenced
M62.89
Default Code
M
Letter
10 of 10 shown
ICD-10-CM

Index Entries Under Myotonia 10 entries · 6 codes

Myotonia (acquisita) (intermittens) M62.89
atrophica G71.11
chondrodystrophic G71.13
congenita (acetazolamide responsive) (dominant) (recessive) G71.12
drug-induced G71.14
dystrophica G71.11
fluctuans G71.19
levior G71.12
permanens G71.19
symptomatic G71.19

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Related Index Terms

All index terms starting with MIndex to Diseases and InjuriesICD-10-CM Code Lookup

Source: Centers for Medicare & Medicaid Services, FY 2027 ICD-10-CM Index to Diseases and Injuries release files, effective October 1, 2026 through September 30, 2027.