H32Chorioretinal disorders in diseases classified elsewhere

H32 is the ICD-10-CM diagnosis code for chorioretinal disorders in diseases classified elsewhere. It belongs to block H30-H36 (disorders of choroid and retina) 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.

Don't report H32 together with the conditions in its Excludes1 note: toxoplasmosis (acquired) (B58.01) and tuberculosis (A18.53).

Code first underlying disease, such as: congenital toxoplasmosis (P37.1), histoplasmosis (B39.-) and leprosy (A30.-).

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 is a manifestation code, so it describes the effect of an underlying disease and can't be the principal diagnosis. Code the underlying condition first.

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 363.8 (other disorders of choroid).