ICD-10 Code D89.839 - Cytokine release syndrome, grade unspecified

ICD-10-CM Diagnosis Code D89.839

Diagnosis Code: D89.839 (Raw: D89839)

Description: Cytokine release syndrome, grade unspecified

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 D89.839 is designated for Cytokine release syndrome, grade unspecified. 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.