G71.2Congenital myopathies

G71.2 is the ICD-10-CM diagnosis code for congenital myopathies. It belongs to category G71 (primary disorders of muscles), block G70-G73 (diseases of myoneural junction and muscle) and chapter 6 (diseases of the nervous system). It is a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.

Within G71 (primary disorders of muscles), G71.2 is specifically for congenital myopathies. Related codes cover muscular dystrophy (G71.0), myotonic disorders (G71.1), mitochondrial myopathy, not elsewhere classified (G71.3), other primary disorders of muscles (G71.8) and primary disorder of muscle, unspecified (G71.9).

To report this condition, pick the subcode that matches the documentation: G71.20 (unspecified), G71.21 (myopathy), G71.22 (myopathy) and G71.29 (myopathy).

The conditions in its Excludes2 note aren't part of G71.2, but may be coded alongside it if the patient has both: arthrogryposis multiplex congenita (Q74.3).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015, and changed in FY2021 (expanded into subcodes).

Before ICD-10, this condition was coded in ICD-9-CM as 359.0 (congenital hereditary muscular dystrophy).