ICD-10-CM > H00-H59 > H49-H52 > H50 > H50.6 > H50.64 H50.64 Lateral rectus muscle entrapment Non-Billable/Non-Specific Codes H50.641Lateral rectus muscle entrapment, right eyeH50.642Lateral rectus muscle entrapment, left eyeH50.649Lateral rectus muscle entrapment, unspecified eye