| H21.30 | Idiopathic cysts of iris, ciliary body or anterior chamber | NON-BILLABLE CODE |
| H21.301 | Idiopathic cysts of iris, ciliary body or anterior chamber, right eye | BILLABLE CODE |
| H21.302 | Idiopathic cysts of iris, ciliary body or anterior chamber, left eye | BILLABLE CODE |
| H21.303 | Idiopathic cysts of iris, ciliary body or anterior chamber, bilateral | BILLABLE CODE |
| H21.309 | Idiopathic cysts of iris, ciliary body or anterior chamber, unspecified eye | BILLABLE CODE |
| H21.31 | Exudative cysts of iris or anterior chamber | NON-BILLABLE CODE |
| H21.311 | Exudative cysts of iris or anterior chamber, right eye | BILLABLE CODE |
| H21.312 | Exudative cysts of iris or anterior chamber, left eye | BILLABLE CODE |
| H21.313 | Exudative cysts of iris or anterior chamber, bilateral | BILLABLE CODE |
| H21.319 | Exudative cysts of iris or anterior chamber, unspecified eye | BILLABLE CODE |
| H21.32 | Implantation cysts of iris, ciliary body or anterior chamber | NON-BILLABLE CODE |
| H21.321 | Implantation cysts of iris, ciliary body or anterior chamber, right eye | BILLABLE CODE |
| H21.322 | Implantation cysts of iris, ciliary body or anterior chamber, left eye | BILLABLE CODE |
| H21.323 | Implantation cysts of iris, ciliary body or anterior chamber, bilateral | BILLABLE CODE |
| H21.329 | Implantation cysts of iris, ciliary body or anterior chamber, unspecified eye | BILLABLE CODE |
| H21.33 | Parasitic cyst of iris, ciliary body or anterior chamber | NON-BILLABLE CODE |
| H21.331 | Parasitic cyst of iris, ciliary body or anterior chamber, right eye | BILLABLE CODE |
| H21.332 | Parasitic cyst of iris, ciliary body or anterior chamber, left eye | BILLABLE CODE |
| H21.333 | Parasitic cyst of iris, ciliary body or anterior chamber, bilateral | BILLABLE CODE |
| H21.339 | Parasitic cyst of iris, ciliary body or anterior chamber, unspecified eye | BILLABLE CODE |
| H21.34 | Primary cyst of pars plana | NON-BILLABLE CODE |
| H21.341 | Primary cyst of pars plana, right eye | BILLABLE CODE |
| H21.342 | Primary cyst of pars plana, left eye | BILLABLE CODE |
| H21.343 | Primary cyst of pars plana, bilateral | BILLABLE CODE |
| H21.349 | Primary cyst of pars plana, unspecified eye | BILLABLE CODE |
| H21.35 | Exudative cyst of pars plana | NON-BILLABLE CODE |
| H21.351 | Exudative cyst of pars plana, right eye | BILLABLE CODE |
| H21.352 | Exudative cyst of pars plana, left eye | BILLABLE CODE |
| H21.353 | Exudative cyst of pars plana, bilateral | BILLABLE CODE |
| H21.359 | Exudative cyst of pars plana, unspecified eye | BILLABLE CODE |
