H16.309
Billable codeUnspecified interstitial keratitis, unspecified eye
The ICD-10 code for unspecified interstitial keratitis, unspecified eye is H16.309.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •Laterality-specific codes exist for this condition — confirm the affected side is documented.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- H16.301Unspecified interstitial keratitis, right eye
- H16.302Unspecified interstitial keratitis, left eye
- H16.303Unspecified interstitial keratitis, bilateral
- H16.309Unspecified interstitial keratitis, unspecified eye
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 37050Approximate match
Associated MS-DRGs
H16.309 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.