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ICD-10-CM 2027

ICD-10 code for sclerosing keratitis

H16.33

Sclerosing keratitis

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Keratitis (nodular) (nonulcerative) (simple) (zonular) › sclerosing”. Page updated September 29, 2026.

About coding sclerosing keratitis

The ICD-10-CM code for sclerosing keratitis is H16.33 (Sclerosing keratitis).

Within H16.3 (interstitial and deep keratitis), H16.33 is specifically for sclerosing keratitis. Related codes cover unspecified interstitial keratitis (H16.30), corneal abscess (H16.31), diffuse interstitial keratitis (H16.32) and other interstitial and deep keratitis (H16.39).

To report this condition, pick the subcode that matches the documentation: H16.331 (right eye), H16.332 (left eye), H16.333 (bilateral) and H16.339 (unspecified eye).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Common questions about sclerosing keratitis ICD-10 codes

What is the ICD-10 code for sclerosing keratitis?

H16.33 — Sclerosing keratitis (a header code; report a more specific subcode).

Is H16.33 billable?

No. H16.33 is a header code. Report one of its more specific subcodes instead.