ICD-9 Code 799.22 - Irritability

ICD-9-CM Diagnosis Code 799.22

Diagnosis Code: 799.22 (Raw: 79922)

Description: Irritability

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 799.22 is designated for Irritability. While superseded by ICD-10 for current healthcare encounters, it remains a recognized reference code for CMS Section 111 reporting, legacy claims adjudication, and historical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.