H16.321Billable
Diffuse interstitial keratitis, right eye
- Chapter
- 7. Diseases of the eye and adnexa
- Category
- H16
- Effective date
- October 1, 2026
Related codes in category H16
H16KeratitisH16.0Corneal ulcerH16.00Unspecified corneal ulcerH16.001Unspecified corneal ulcer, right eyeYesH16.002Unspecified corneal ulcer, left eyeYesH16.003Unspecified corneal ulcer, bilateralYesH16.009Unspecified corneal ulcer, unspecified eyeYesH16.01Central corneal ulcerH16.011Central corneal ulcer, right eyeYesH16.012Central corneal ulcer, left eyeYesH16.013Central corneal ulcer, bilateralYesH16.019Central corneal ulcer, unspecified eyeYes
Frequently asked questions
What is ICD-10 code H16.321?
H16.321 is an ICD-10-CM diagnosis code for Diffuse interstitial keratitis, right eye.
Is H16.321 a billable code?
Yes. H16.321 is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is H16.321 in?
H16.321 falls under Chapter 7: Diseases of the eye and adnexa.
When did H16.321 become effective?
H16.321 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to H16.321?
H16.321 belongs to category H16, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.