ICD-10-CM 2027
ICD-10 code for vesicular keratitis
From the official ICD-10-CM alphabetic index entry “Keratitis (nodular) (nonulcerative) (simple) (zonular) › vesicular”. Page updated September 29, 2026.
About coding vesicular keratitis
The ICD-10-CM code for vesicular keratitis is H16.8 (Other keratitis).
Within H16, choose H16.8 (Other keratitis) only when documentation doesn't support a more specific option: corneal ulcer (H16.0), other and unspecified superficial keratitis without conjunctivitis (H16.1), keratoconjunctivitis (H16.2), interstitial and deep keratitis (H16.3), corneal neovascularization (H16.4) and unspecified keratitis (H16.9).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 124 (Other Disorders of the Eye with MCC or Thrombolytic Agent, relative weight 1.2471) and DRG 125 (Other Disorders of the Eye without MCC, relative weight 0.7702), in MDC 02 (Diseases and Disorders of the Eye), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about vesicular keratitis ICD-10 codes
What is the ICD-10 code for vesicular keratitis?
- H16.8 — Other keratitis.
Is H16.8 billable?
- Yes. H16.8 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can H16.8 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict H16.8 as a principal diagnosis.
Is H16.8 a CC or MCC?
- No. H16.8 is neither a CC nor an MCC under MS-DRG v44.0.