Other disorders of iris and ciliary body (H21)
The ICD-10 code section H21 covers various other disorders of the iris and ciliary body, key parts of the eye involved in controlling light and focusing. These codes are used to classify specific eye conditions affecting these structures beyond common or well-known diagnoses.
This section includes codes for conditions such as hyphema (H21.0), known by terms like spontaneous hyphema or iris bleeding, which refers to blood in the eye's anterior chamber. It also covers vascular disorders (H21.1X), including rubeosis iridis or neovascular glaucoma, linked to abnormal blood vessel growth from diseases like diabetes. Other notable conditions include various degenerations of the iris and ciliary body (H21.2), pigmentary iris changes such as pigment dispersion syndrome (H21.23), and cysts of the iris or ciliary body with different etiologies (H21.3). Adhesions and disruptions like anterior and posterior synechiae which can lead to angle-closure glaucoma are coded in H21.5x. Uncommon disorders such as floppy iris syndrome (H21.81) are also included. These detailed codes help healthcare providers document the exact eye disorder, specifying affected eyes when necessary, aiding proper diagnosis and treatment planning.
- H21 - Other disorders of iris and ciliary body
- H21.0 - Hyphema
- H21.1 - Other vascular disorders of iris and ciliary body
- H21.1X - Other vascular disorders of iris and ciliary body
- H21.2 - Degeneration of iris and ciliary body
- H21.21 - Degeneration of chamber angle
- H21.22 - Degeneration of ciliary body
- H21.23 - Degeneration of iris (pigmentary)
- H21.24 - Degeneration of pupillary margin
- H21.25 - Iridoschisis
- H21.26 - Iris atrophy (essential) (progressive)
- H21.27 - Miotic pupillary cyst
- H21.3 - Cyst of iris, ciliary body and anterior chamber
- H21.30 - Idiopathic cysts of iris, ciliary body or anterior
- H21.31 - Exudative cysts of iris or anterior chamber
- H21.32 - Implantation cysts of iris, ciliary body or anterio
- H21.33 - Parasitic cyst of iris, ciliary body or anterior ch
- H21.34 - Primary cyst of pars plana
- H21.35 - Exudative cyst of pars plana
- H21.4 - Pupillary membranes
- H21.5 - Other and unspecified adhesions and disruptions of i
- H21.50 - Unspecified adhesions of iris
- H21.51 - Anterior synechiae (iris)
- H21.52 - Goniosynechiae
- H21.53 - Iridodialysis
- H21.54 - Posterior synechiae (iris)
- H21.55 - Recession of chamber angle
- H21.56 - Pupillary abnormalities
- H21.8 - Other specified disorders of iris and ciliary body
Diseases of the eye and adnexa (H00–H59)
Disorders of sclera, cornea, iris and ciliary body (H15-H22)
H21 Other disorders of iris and ciliary body
H21.0 Hyphema
- H21.00 Hyphema, unspecified eye
- H21.01 Hyphema, right eye
- H21.02 Hyphema, left eye
- H21.03 Hyphema, bilateral
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
H21.25 Iridoschisis
- H21.251 Iridoschisis, right eye
- H21.252 Iridoschisis, left eye
- H21.253 Iridoschisis, bilateral
- 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
H21.27 Miotic pupillary cyst
- 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
- H21.29 Other iris atrophy
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
H21.4 Pupillary membranes
- 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
H21.52 Goniosynechiae
- H21.521 Goniosynechiae, right eye
- H21.522 Goniosynechiae, left eye
- H21.523 Goniosynechiae, bilateral
- H21.529 Goniosynechiae, unspecified eye
H21.53 Iridodialysis
- H21.531 Iridodialysis, right eye
- H21.532 Iridodialysis, left eye
- H21.533 Iridodialysis, bilateral
- 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
H21.56 Pupillary abnormalities
- 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
- H21.81 Floppy iris syndrome
- 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
Other disorders of iris and ciliary body (H21)
Instructional Notations
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
- sympathetic uveitis H44.1
Clinical Terms
The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.
Glaucoma
An ocular disease, occurring in many forms, having as its primary characteristics an unstable or a sustained increase in the intraocular pressure which the eye cannot withstand without damage to its structure or impairment of its function. The consequences of the increased pressure may be manifested in a variety of symptoms, depending upon type and severity, such as excavation of the optic disk, hardness of the eyeball, corneal anesthesia, reduced visual acuity, seeing of colored halos around lights, disturbed dark adaptation, visual field defects, and headaches. (Dictionary of Visual Science, 4th ed)
Hyphema
Bleeding in the anterior chamber of the eye.
Iridocorneal Endothelial Syndrome
A grouping of three closely linked conditions: iris nevus (or Cogan-Reese) syndrome, Chandler Syndrome, and essential (progressive) iris atrophy. The most common features of this syndrome are the movement of endothelial cells off the cornea onto the iris leading to corneal swelling, distortion of the iris, and variable degrees of distortion of the pupil. The abnormal cell movement plugs fluid outflow channels of the eye causing GLAUCOMA.
