ICD-10-CM Diagnosis Code R83.9
Diagnosis Code: R83.9 (Raw: R839)
Description: Unspecified abnormal finding in cerebrospinal fluid
Classification: International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM)
Fiscal Year: 2026
CMS Section 111 Status: Valid for reporting.
Overview & Clinical Details
ICD-10-CM code R83.9 is designated for Unspecified abnormal finding in cerebrospinal fluid. In medical documentation and insurance billing, this code is utilized to specify medical diagnosis for patient records, reimbursement workflows, and compliance under CMS Section 111 mandatory insurer reporting guidelines.