B02.33Zoster keratitis

B02.33 is the ICD-10-CM diagnosis code for zoster keratitis. It belongs to category B02 (zoster [herpes zoster]), block B00-B09 (viral infections characterized by skin and mucous membrane lesions) and chapter 1 (certain infectious and parasitic diseases). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within B02.3 (zoster ocular disease), B02.33 is specifically for zoster keratitis. Related codes cover unspecified (B02.30), zoster conjunctivitis (B02.31), zoster iridocyclitis (B02.32), zoster scleritis (B02.34) and other herpes zoster eye disease (B02.39).

As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.

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), DRG 125 (Other Disorders of the Eye without MCC, relative weight 0.7702), DRG 791 (Prematurity with Major Problems, relative weight 4.1075), DRG 793 (Full Term Neonate with Major Problems, relative weight 4.2195), DRG 974 (HIV with Major Related Condition with MCC, relative weight 3.0506), DRG 975 (HIV with Major Related Condition with CC, relative weight 1.3252) and 1 more, in MDC 02 (Diseases and Disorders of the Eye), MDC 15 (Newborns and Other Neonates with Conditions Originating in the Perinatal Period) and MDC 25 (Human Immunodeficiency Virus Infections), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 053.21 (herpes zoster keratoconjunctivitis).