Diseases of myoneural junction and muscle (G70-G73) ICD-10-CM
The G70–G73 section covers diseases of myoneural junction and muscle with 62 ICD-10-CM diagnosis codes, of which 48 are billable in fiscal year 2027. The section is organized into the 4 code ranges listed below.
Code Ranges in This Section 4 ranges · 62 codes
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the G70–G73 Code Range
These conditions affect muscles or the connection between nerves and muscles.
G70 separates myasthenia gravis from toxic myoneural disorders and congenital or developmental myasthenia. G71 groups primary muscle disorders by type, including muscular dystrophy and congenital myopathies, or muscle diseases. G72 separates other myopathies by drug, alcohol, or other toxic cause. It also identifies periodic paralysis and inflammatory or immune myopathies. G73 groups nerve-muscle connection and muscle disorders in diseases classified elsewhere, separating Lambert-Eaton syndrome, other myasthenic syndromes, and myopathy.
Questions About This Page
How many codes are in the G70-G73 range?
The G70-G73 range contains 62 ICD-10-CM diagnosis codes in FY 2027. 48 of them are billable, and the rest are category headers that organize the section.
What conditions does G70-G73 cover?
The range covers diseases of myoneural junction and muscle. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
