J31.1 is the ICD-10 code for Chronic nasopharyngitis. It is a four-character subcategory of J31 (Chronic rhinitis, nasopharyngitis and pharyngitis), the most specific level in the WHO edition. It belongs to the block J30–J39 (Other diseases of upper respiratory tract) in Chapter X, Diseases of the respiratory system.
- Code type
- Subcategory (4 characters)
- Chapter
- X · J00–J99
- Classification
- WHO ICD-10, 2019 version
What J31.1 excludes
Conditions that look similar but belong under another code.
- nasopharyngitis, acute or NOS J00
J31.1 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
J31.1Kronisk nasofaryngit
J31.1Kronisk nasofaryngitt
DJ311Kronisk nasofaryngitis
J31.1Pitkäaikainen nenänielutulehdus
J31.1Chronische Rhinopharyngitis
J31.1Rhinopharyngite chronique
J31.1chronische nasofaryngitis
J31.1Chronic nasopharyngitis
Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.
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