H10.30Unspecified acute conjunctivitis, unspecified eye

H10.30 is the ICD-10-CM diagnosis code for unspecified acute conjunctivitis, unspecified eye. It belongs to category H10 (conjunctivitis), block H10-H11 (disorders of conjunctiva) and chapter 7 (diseases of the eye and adnexa). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within H10.3, choose H10.30 (unspecified eye) only when documentation doesn't support a more specific option: right eye (H10.31), left eye (H10.32) and bilateral (H10.33).

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.

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 372.00 (acute conjunctivitis, unspecified).