ICD-10-CM diagnosis code
H16.203 Unspecified keratoconjunctivitis, bilateral
- Billable
- Yes, a complete code (FY2026)
- Category
- H16 Keratitis
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Other codes in H16
126 complete codes in this category.
- H16.141Punctate keratitis, right eye
- H16.142Punctate keratitis, left eye
- H16.143Punctate keratitis, bilateral
- H16.149Punctate keratitis, unspecified eye
- H16.201Unspecified keratoconjunctivitis, right eye
- H16.202Unspecified keratoconjunctivitis, left eye
- H16.203Unspecified keratoconjunctivitis, bilateral
- H16.209Unspecified keratoconjunctivitis, unspecified eye
- H16.211Exposure keratoconjunctivitis, right eye
- H16.212Exposure keratoconjunctivitis, left eye
- H16.213Exposure keratoconjunctivitis, bilateral
- H16.219Exposure keratoconjunctivitis, unspecified eye
Documentation tips
- Make sure the note supports every element of the title, “Unspecified keratoconjunctivitis, bilateral”: each detail in it should be traceable to the history, examination or assessment.
- Code to the highest specificity the documentation supports. If a detail is missing from the note, add it to the note rather than choosing a less specific code by default.
- Check the Tabular List and official guidelines for instructional notes (“code first”, “use additional code”, Excludes1/Excludes2) that apply to H16.
The international WHO ICD-10 also has H16, with its inclusion and exclusion notes; titles and detail can differ from ICD-10-CM.
ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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