H16.391 (Other interstitial and deep keratitis, right eye) compared with H16.392 (Other interstitial and deep keratitis, left eye), from the official CMS tabular data. H16.391 and H16.392 code the same condition on opposite sides.
Same condition; these differ only in which side is documented.
These codes share a category and title and differ only in the side affected. The documentation decides which applies, and a bilateral code is reported only where the code set provides one.
Source: ICD-10-CM tabular list (laterality variant derived from the code title)
Same condition, opposite side. H16.391 and H16.392 name the same condition on opposite sides of the body.
Same category and title, differing only in which side is affected — the documentation decides which one applies, and a bilateral code is reported only where the code set provides one.
| H16.391Other interstitial and deep keratitis, right eye | H16.392Other interstitial and deep keratitis, left eye | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | H00-H59 — Diseases of the Eye and Adnexa (H00-H59) | H00-H59 — Diseases of the Eye and Adnexa (H00-H59) |
| Definition | Other interstitial and deep keratitis, right eye is a billable ICD-10-CM diagnosis code (H16.391). | Other interstitial and deep keratitis, left eye is a billable ICD-10-CM diagnosis code (H16.392). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources