ICD-9-CM Diagnosis Code 836.4
Diagnosis Code: 836.4 (Raw: 8364)
Description: Dislocation of patella, open
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 836.4 is designated for Dislocation of patella, open. While superseded by ICD-10 for current healthcare encounters, it remains a recognized reference code for CMS Section 111 reporting, legacy claims adjudication, and historical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.