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H16.3

Non-billable

Interstitial and deep keratitis

H16.3 is the ICD-10-CM code for Interstitial and deep keratitis. It is a non-billable category code — use a more specific child code such as H16.30 for billing.

Status
Header (non-billable)
Chapter
H00-H59
Parent
H16
Subcodes
5
Edition
FY2026

H00-H59 Diseases of the eye and adnexa

No additional coding notes for this code.

Frequently asked questions

What is ICD-10 code H16.3?
H16.3 is the ICD-10-CM code for "Interstitial and deep keratitis". It falls under H00-H59 Diseases of the eye and adnexa.
Is H16.3 a billable code?
No — H16.3 is a non-billable header code. Use a more specific child code (such as H16.30) for billing.
What are the subcodes of H16.3?
H16.3 has 5 more specific child codes, including H16.30, H16.31, H16.32.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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