ICD-10-CM > H00-H59 > H43-H44 > H44 > H44.4 > H44.41 H44.41 Flat anterior chamber hypotony of eye Non-Billable/Non-Specific Codes H44.411Flat anterior chamber hypotony of right eyeH44.412Flat anterior chamber hypotony of left eyeH44.413Flat anterior chamber hypotony of eye, bilateralH44.419Flat anterior chamber hypotony of unspecified eye