ICD-10 Code K14.4 – Atrophy of tongue papillae (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K14.4 – Atrophy of tongue papillae
What it is
K14.4 identifies loss or thinning of the normal papillae on the tongue surface. This gives the tongue a smoother appearance than usual.
Clinical signs
Findings may include a smooth, depapillated tongue and altered tongue texture. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents atrophy of the tongue papillae, depapillation, or a smooth tongue due to papillary loss. Apply it only when the record clearly supports the tongue finding itself. If the cause is documented, code the underlying condition as instructed.
Do not use for
Do not use this code for general mouth sores, tongue pain, or unrelated tongue discoloration. Check documentation if the note describes glossitis, fissuring, or another oral disorder instead.
Coding tip
Code K14.4 only when papillary atrophy is explicitly documented; otherwise, check documentation for a more specific oral diagnosis.