ICD-10 Code K08.26 – Severe atrophy of the maxilla (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K08.26 – Severe atrophy of the maxilla
What it is
K08.26 identifies severe loss of maxillary bone volume, usually affecting the upper jaw ridge. It describes advanced atrophy that can limit denture support or implant planning.
Clinical signs
Clinical features vary; refer to documentation. Commonly, you may see marked ridge flattening, reduced bone height, and difficulty retaining a maxillary prosthesis.
When to use this code
Use this code when the provider documents severe atrophy of the maxilla, especially in dental or oral surgery records. It fits cases where the upper jaw has significant resorption that affects function or reconstruction planning. If the note only says “atrophy” without severity, check documentation.
Do not use for
Do not use it for mild or unspecified maxillary atrophy, or for general edentulism alone. If the record describes another jaw, use the code that matches the documented site.
Coding tip
Code K08.26 only when “severe” maxillary atrophy is clearly documented; otherwise, query for specificity.