ICD-10 Code H16.29 – Other keratoconjunctivitis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H16.29 – Other keratoconjunctivitis
What it is
H16.29 identifies keratoconjunctivitis that does not fit a more specific ICD-10 category. Use it for documented inflammation involving both the cornea and conjunctiva when the record says “other” or gives an unspecified subtype.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include eye redness, irritation, tearing, foreign-body sensation, photophobia, or blurred vision when corneal involvement is present.
When to use this code
Use this code when the clinician documents keratoconjunctivitis and no more specific type is named. It is appropriate when the note clearly supports combined corneal and conjunctival inflammation but does not identify a distinct infectious, allergic, or dry-eye cause. Check documentation if the etiology is unclear.
Do not use for
Do not use H16.29 when the record supports a more specific keratoconjunctivitis code, such as a named infectious or allergic condition. Also avoid it if the chart documents conjunctivitis alone or keratitis without conjunctival involvement.
Coding tip
Query the provider when the note says only “eye inflammation,” because you need documented corneal and conjunctival involvement to support this code.