472.0
ICD-9-CMThis code represents a persistent inflammation of the nasal mucous membranes, characterized by symptoms such as nasal congestion, rhinorrhea, and post-nasal drip lasting for an extended period, typically more than 12 weeks. It signifies a non-allergic, non-infectious, and non-acute form of nasal inflammation.
Apply this code when documentation clearly indicates a diagnosis of chronic rhinitis, often after ruling out acute infections or allergic etiologies. This diagnosis is supported by a history of long-standing nasal symptoms without an identifiable acute cause or allergen.
AI-generated reference — verify against official guidelines