ICD-10-CM > H00-H59 > H55-H57 > H57 > H57.0 > H57.05 H57.05 Tonic pupil Non-Billable/Non-Specific Codes H57.051Tonic pupil, right eyeH57.052Tonic pupil, left eyeH57.053Tonic pupil, bilateralH57.059Tonic pupil, unspecified eye