Chorioretinal disorders in diseases classified elsewhere

This code represents chorioretinal inflammation or degeneration that is a manifestation of another underlying systemic disease. It indicates that the primary pathology affecting the choroid and retina is secondary to a condition classified elsewhere in the ICD-10-CM.

Use this code when documentation clearly links a chorioretinal disorder to an underlying systemic disease, and the specific systemic disease is coded separately. This code is appropriate when the chorioretinal involvement is a complication or feature of a primary condition, such as certain autoimmune diseases or infections not specifically excluded.

• Always sequence the underlying systemic disease code first, followed by this code to indicate the ocular manifestation.
• Refer to the "Excludes1" notes carefully; do not use this code if the chorioretinitis is due to acquired toxoplasmosis (B58.01) or tuberculosis (A18.53).
• Ensure the physician's documentation explicitly states the causal link between the systemic disease and the chorioretinal disorder.