ICD-10 Code J39.0 – Retropharyngeal and parapharyngeal abscess (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code J39.0 – Retropharyngeal and parapharyngeal abscess
What it is
J39.0 identifies a deep neck space abscess involving the retropharyngeal or parapharyngeal area. It reflects a localized collection of pus in these spaces, usually documented by the provider.
Clinical signs
Typical findings include sore throat, neck pain, swelling, fever, and difficulty swallowing. Clinical features vary; refer to documentation, especially if imaging or exam confirms a deep neck abscess.
When to use this code
Use J39.0 when the record specifically states retropharyngeal abscess, parapharyngeal abscess, or both. It is appropriate when the diagnosis is confirmed and the site is documented as one of these spaces.
If the note only says deep neck infection or pharyngeal infection, check documentation before assigning this code. Code the documented condition rather than assuming the abscess location.
Do not use for
Do not use J39.0 for uncomplicated sore throat, tonsillitis, or superficial neck infection. Check documentation if the abscess is in a different anatomic site.
Coding tip
Assign J39.0 only when the provider documents the retropharyngeal or parapharyngeal abscess location clearly.