ICD-10-CM > H00-H59 > H10-H11 > H11 > H11.0 > H11.02 H11.02 Central pterygium of eye Non-Billable/Non-Specific Codes H11.021Central pterygium of right eyeH11.022Central pterygium of left eyeH11.023Central pterygium of eye, bilateralH11.029Central pterygium of unspecified eye