H21 should not be used for reimbursement purposes as there are multiple sub-diagnoses that fall under this code. Please refer to the sub-diagnoses below.
Related Diagnoses H21.00 Hyphema, unspecified eye H21.1 Other vascular disorders of iris and ciliary body H21.1X Other vascular disorders of iris and ciliary body H21.1X1 Other vascular disorders of iris and ciliary body, right eye H21.1X2 Other vascular disorders of iris and ciliary body, left eye H21.1X3 Other vascular disorders of iris and ciliary body, bilateral H21.1X9 Other vascular disorders of iris and ciliary body, unspecified eye H21.2 Degeneration of iris and ciliary body H21.21 Degeneration of chamber angle H21.211 Degeneration of chamber angle, right eye H21.212 Degeneration of chamber angle, left eye H21.213 Degeneration of chamber angle, bilateral H21.219 Degeneration of chamber angle, unspecified eye H21.22 Degeneration of ciliary body H21.221 Degeneration of ciliary body, right eye H21.222 Degeneration of ciliary body, left eye H21.223 Degeneration of ciliary body, bilateral H21.229 Degeneration of ciliary body, unspecified eye H21.23 Degeneration of iris (pigmentary) H21.231 Degeneration of iris (pigmentary), right eye H21.232 Degeneration of iris (pigmentary), left eye H21.233 Degeneration of iris (pigmentary), bilateral H21.239 Degeneration of iris (pigmentary), unspecified eye H21.24 Degeneration of pupillary margin H21.241 Degeneration of pupillary margin, right eye H21.242 Degeneration of pupillary margin, left eye H21.243 Degeneration of pupillary margin, bilateral H21.249 Degeneration of pupillary margin, unspecified eye H21.259 Iridoschisis, unspecified eye H21.26 Iris atrophy (essential) (progressive) H21.261 Iris atrophy (essential) (progressive), right eye H21.262 Iris atrophy (essential) (progressive), left eye H21.263 Iris atrophy (essential) (progressive), bilateral H21.269 Iris atrophy (essential) (progressive), unspecified eye H21.271 Miotic pupillary cyst, right eye H21.272 Miotic pupillary cyst, left eye H21.273 Miotic pupillary cyst, bilateral H21.279 Miotic pupillary cyst, unspecified eye H21.3 Cyst of iris, ciliary body and anterior chamber H21.30 Idiopathic cysts of iris, ciliary body or anterior chamber H21.301 Idiopathic cysts of iris, ciliary body or anterior chamber, right eye H21.302 Idiopathic cysts of iris, ciliary body or anterior chamber, left eye H21.303 Idiopathic cysts of iris, ciliary body or anterior chamber, bilateral H21.309 Idiopathic cysts of iris, ciliary body or anterior chamber, unspecified eye H21.31 Exudative cysts of iris or anterior chamber H21.311 Exudative cysts of iris or anterior chamber, right eye H21.312 Exudative cysts of iris or anterior chamber, left eye H21.313 Exudative cysts of iris or anterior chamber, bilateral H21.319 Exudative cysts of iris or anterior chamber, unspecified eye H21.32 Implantation cysts of iris, ciliary body or anterior chamber H21.321 Implantation cysts of iris, ciliary body or anterior chamber, right eye H21.322 Implantation cysts of iris, ciliary body or anterior chamber, left eye H21.323 Implantation cysts of iris, ciliary body or anterior chamber, bilateral H21.329 Implantation cysts of iris, ciliary body or anterior chamber, unspecified eye H21.33 Parasitic cyst of iris, ciliary body or anterior chamber H21.331 Parasitic cyst of iris, ciliary body or anterior chamber, right eye H21.332 Parasitic cyst of iris, ciliary body or anterior chamber, left eye H21.333 Parasitic cyst of iris, ciliary body or anterior chamber, bilateral H21.339 Parasitic cyst of iris, ciliary body or anterior chamber, unspecified eye H21.34 Primary cyst of pars plana H21.341 Primary cyst of pars plana, right eye H21.342 Primary cyst of pars plana, left eye H21.343 Primary cyst of pars plana, bilateral H21.349 Primary cyst of pars plana, unspecified eye H21.35 Exudative cyst of pars plana H21.351 Exudative cyst of pars plana, right eye H21.352 Exudative cyst of pars plana, left eye H21.353 Exudative cyst of pars plana, bilateral H21.359 Exudative cyst of pars plana, unspecified eye H21.40 Pupillary membranes, unspecified eye H21.41 Pupillary membranes, right eye H21.42 Pupillary membranes, left eye H21.43 Pupillary membranes, bilateral H21.5 Other and unspecified adhesions and disruptions of iris and ciliary body H21.50 Unspecified adhesions of iris H21.501 Unspecified adhesions of iris, right eye H21.502 Unspecified adhesions of iris, left eye H21.503 Unspecified adhesions of iris, bilateral H21.509 Unspecified adhesions of iris and ciliary body, unspecified eye H21.51 Anterior synechiae (iris) H21.511 Anterior synechiae (iris), right eye H21.512 Anterior synechiae (iris), left eye H21.513 Anterior synechiae (iris), bilateral H21.519 Anterior synechiae (iris), unspecified eye H21.529 Goniosynechiae, unspecified eye H21.539 Iridodialysis, unspecified eye H21.54 Posterior synechiae (iris) H21.541 Posterior synechiae (iris), right eye H21.542 Posterior synechiae (iris), left eye H21.543 Posterior synechiae (iris), bilateral H21.549 Posterior synechiae (iris), unspecified eye H21.55 Recession of chamber angle H21.551 Recession of chamber angle, right eye H21.552 Recession of chamber angle, left eye H21.553 Recession of chamber angle, bilateral H21.559 Recession of chamber angle, unspecified eye H21.561 Pupillary abnormality, right eye H21.562 Pupillary abnormality, left eye H21.563 Pupillary abnormality, bilateral H21.569 Pupillary abnormality, unspecified eye H21.8 Other specified disorders of iris and ciliary body H21.82 Plateau iris syndrome (post-iridectomy) (postprocedural) H21.89 Other specified disorders of iris and ciliary body H21.9 Unspecified disorder of iris and ciliary body