H16.3

Non-Billable

ChapterH00–H59

Ranksubcategory

Official Description

Interstitial and deep keratitis

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Non-billable category (requires more specific sub-code).
•Chapter 7: Diseases of the Eye and Adnexa (H00-H59).

General instructions are available for the parent sections:

View CH7 Notes

Clinical Hierarchy

CH7Diseases of the eye and adnexa (H00-H59)

H15-H22Disorders of sclera, cornea, iris and ciliary body (H15-H22)

H16Keratitis

H16.3Interstitial and deep keratitis

H16.30Unspecified interstitial keratitis

H16.31Corneal abscess

H16.32Diffuse interstitial keratitis

H16.33Sclerosing keratitis

H16.39Other interstitial and deep keratitis

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to H16.3:

chapterCH7

Diseases of the eye and adnexa (H00-H59)

View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to H16.3. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

9 raw paths

Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic)1 unique routes

cornea→H16.3

Cogan's syndrome1 unique routes

Direct index entry→H16.3

Keratitis (nodular) (nonulcerative) (simple) (zonular)7 unique routes

deep→H16.3(2 variants)

specified type NEC→H16.3

interstitial (nonsyphilitic)→H16.3(4 variants)

diffuse→H16.3

sclerosing→H16.3

specified type NEC→H16.3

sclerosing→H16.3

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

Find Procedures (ICD-10-PCS)

Find surgical and procedural codes related to Interstitial and deep keratitis.

Search PCS Codes