ICD-9-CM Diagnosis Code 366.03
Diagnosis Code: 366.03 (Raw: 36603)
Description: Cortical, lamellar, or zonular cataract
Classification: International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM)
Fiscal Year: 2026 Reference
CMS Section 111 Status: Valid for reporting.
Overview & Historical Usage
ICD-9-CM code 366.03 is designated for Cortical, lamellar, or zonular cataract. While superseded by ICD-10 for current healthcare encounters, it remains a recognized reference code for CMS Section 111 reporting, legacy claims adjudication, and historical clinical data analysis.