ICD-10 Code H11.429 – Conjunctival Edema, Unspecified Eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H11.429 – Conjunctival edema, unspecified eye
What it is
H11.429 identifies swelling of the conjunctiva, the thin membrane covering the white of the eye and inner eyelids, when the affected eye is not specified. Use this code when documentation states conjunctival edema or chemosis without laterality.
Clinical signs
Typical findings include visible conjunctival swelling, a puffy or ballooned appearance, and possible irritation or redness. Clinical features vary; refer to documentation.
When to use this code
Use H11.429 when the record clearly documents conjunctival edema but does not identify the right or left eye. It also fits when the provider notes chemosis or conjunctival swelling without further localization. Check documentation if another eye disorder is the primary diagnosis.
Do not use for
Do not use this code for corneal edema, eyelid swelling, or generalized facial edema. If the eye laterality is documented, select the more specific code instead.
Coding tip
Confirm whether the provider specified right, left, or unspecified eye before assigning H11.429.