Billable / Specific Code
ICD-10-CM H20.042 is the diagnosis code for Secondary noninfectious iridocyclitis, left eye. This code falls under the section "Disorders of sclera, cornea, iris and ciliary body" within Chapter 7 — Diseases of the eye and adnexa (H00-H59). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.
Understanding where H20.042 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, H20.042 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
H20.042 is the ICD-10-CM diagnosis code for "Secondary noninfectious iridocyclitis, left eye". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of H20.042 is H20.04 ("Secondary noninfectious iridocyclitis"). H20.042 provides a more specific classification within this category.
H20.042 is located in Section H15-H22 — "Disorders of sclera, cornea, iris and ciliary body" within Chapter 7 of the ICD-10-CM Tabular List.
Use H20.042 when the patients documented diagnosis matches "Secondary noninfectious iridocyclitis, left eye" 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 Secondary noninfectious iridocyclitis, left eye is H20.042.
Yes, H20.042 can be used as a primary diagnosis code since it is billable and specific.
H20.042 is in Chapter 7 of the ICD-10-CM Tabular List.
Yes, H20.042 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.