Non-Billable / Non-Specific Code
ICD-10-CM H21 is the diagnosis code for Other disorders of iris and ciliary body. This code falls under the section "Disorders of sclera, cornea, iris and ciliary body" within Chapter 7 â Diseases of the eye and adnexa (H00-H59). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions are not included in H21. If the patient has both, code each condition separately:
Understanding where H21 sits in the ICD-10-CM classification helps ensure proper coding:
No, H21 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
H21 is the ICD-10-CM diagnosis code for "Other disorders of iris and ciliary body". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
H21 is located in Section H15-H22 â "Disorders of sclera, cornea, iris and ciliary body" within Chapter 7 of the ICD-10-CM Tabular List.
H21 has 8 sub-code(s) that provide more specific detail: H21.0, H21.1, H21.2, H21.3, H21.4 and more.
Use H21 when the patients documented diagnosis matches "Other disorders of iris and ciliary body" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Other disorders of iris and ciliary body is H21.
No, H21 is non-billable. Use a more specific sub-code for primary diagnosis billing.
H21 is in Chapter 7 of the ICD-10-CM Tabular List.
Yes, H21 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.