H16.321 Diffuse interstitial keratitis, right eye

Billable ICD-10-CM code, FY2026.

Applies from H16.32 Diffuse interstitial keratitis

Applicable to

• Cogan's syndrome

MS-DRG index

Defines the logic of DRG(s) 124-125 in MDC 02.

Approximate ICD-9-CM (GEMs)

• 370.52 Diffuse interstitial keratitis (approximate)

Nearby codes

• H16.311 Corneal abscess, right eye
• H16.312 Corneal abscess, left eye
• H16.313 Corneal abscess, bilateral
• H16.319 Corneal abscess, unspecified eye
• H16.32 Diffuse interstitial keratitis
• H16.321 Diffuse interstitial keratitis, right eye (this code)
• H16.322 Diffuse interstitial keratitis, left eye
• H16.323 Diffuse interstitial keratitis, bilateral
• H16.329 Diffuse interstitial keratitis, unspecified eye
• H16.33 Sclerosing keratitis
• H16.331 Sclerosing keratitis, right eye