ICD-10-CM > M00-M99 > M60-M63 > M62 > M62.1 > M62.16 M62.16 Other rupture of muscle (nontraumatic), lower leg Non-Billable/Non-Specific Codes M62.161Other rupture of muscle (nontraumatic), right lower legM62.162Other rupture of muscle (nontraumatic), left lower legM62.169Other rupture of muscle (nontraumatic), unspecified lower leg