H21
Other disorders of iris and ciliary body
Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 12 never code together
H00-H59chapter
Excludes2
- certain conditions originating in the perinatal period (P04-P96)P04-P96
- certain infectious and parasitic diseases (A00-B99)A00-B99
- complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Q00-Q99
- diabetes mellitus related eye conditions (E09.3-, E10.3-, E11.3-, E13.3-)E09.3-E10.3-E11.3-E13.3-
- endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
- injury (trauma) of eye and orbit (S05.-)S05.-
- injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
- neoplasms (C00-D49)C00-D49
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
- syphilis related eye disorders (A50.01, A50.3-, A51.43, A52.71)A50.01A50.3-A51.43A52.71
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 1
H00-H59chapter
Notes
- Use an external cause code following the code for the eye condition, if applicable, to identify the cause of the eye condition
Index entries leading here filed at null
No alphabetic index entry points at this code.
Subordinate codes 8
H21.0 Hyphema H21.1 Other vascular disorders of iris and ciliary body H21.2 Degeneration of iris and ciliary body H21.3 Cyst of iris, ciliary body and anterior chamber H21.4 Pupillary membranes H21.5 Oth and unsp adhes and disruptions of iris and ciliary body H21.8 Other specified disorders of iris and ciliary body H21.9 Unspecified disorder of iris and ciliary body
Medications 4
41 Bipolar and Related Disorders drugs 10 Feeding and Eating Disorders drugs 65 Sleep Initiation and Maintenance Disorders drugs 19 Trauma and Stressor Related Disorders drugs
MED-RT files conditions by MeSH, which carves the world differently from ICD-10. These are name matches on this code's description, offered as candidates — not as an assertion that they are this code.
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.