ICD-10 Code K08.20 – Unspecified atrophy of edentulous alveolar ridge (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K08.20 – Unspecified atrophy of edentulous alveolar ridge
What it is
K08.20 identifies loss of alveolar ridge height or width in an edentulous area when the record does not specify the type or severity of atrophy. Use it for documented ridge resorption after tooth loss.
Clinical signs
Clinical features vary; refer to documentation. Commonly, the chart notes a thin, flattened, or resorbed edentulous ridge that may affect denture fit, retention, or implant planning.
When to use this code
Use this code when the provider documents atrophy of an edentulous alveolar ridge but does not describe a more specific form. It also fits cases where the ridge has resorbed after extractions and the exact subtype is not stated. If the note is unclear, check documentation before coding.
Do not use for
Do not use it for atrophy involving a dentate ridge or for conditions better described by a more specific ICD-10-CM code. If the record only mentions tooth loss without ridge atrophy, this code is not supported.
Coding tip
Code K08.20 only when the provider documents edentulous alveolar ridge atrophy; otherwise, query for specificity or use the documented dental condition.