ICD-9-CM Diagnosis Code 997.99
Diagnosis Code: 997.99 (Raw: 99799)
Description: Complications affecting other specified body systems, not elsewhere classified
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 997.99 is designated for Complications affecting other specified body systems, not elsewhere classified. While superseded by ICD-10 for current healthcare encounters, it remains a recognized reference code for CMS Section 111 reporting, legacy claims adjudication, and historical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.