ICD-10 Code K04.7 – Periapical abscess without sinus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K04.7 – Periapical abscess without sinus
What it is
K04.7 identifies a localized infection at the root tip of a tooth, usually from untreated dental caries or pulp disease. It means the abscess has formed without a draining sinus tract.
Clinical signs
Typical findings include tooth pain, tenderness to percussion, swelling near the affected tooth, and possible localized facial or gingival swelling. Clinical features vary; refer to documentation.
When to use this code
Use K04.7 when the record clearly documents a periapical abscess and specifically states there is no sinus tract. It is appropriate for dental or medical visits where the diagnosis is confirmed by exam, imaging, or provider assessment. Check documentation if the chart only says dental infection or abscess.
Do not use for
Do not use this code for periapical abscess with sinus, periodontal abscess, or nonspecific oral swelling. If the documentation does not identify the periapical source, check documentation.
Coding tip
Look for the phrase “without sinus” or equivalent wording before assigning K04.7.