ICD-10 Code A38.9 – Scarlet fever, uncomplicated (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A38.9 – Scarlet fever, uncomplicated
What it is
A38.9 identifies scarlet fever without a specified complication. It refers to a streptococcal illness with the classic rash syndrome, but the documentation does not name a more specific form.
Clinical signs
Typical findings include a sore throat, fever, and a fine, sandpaper-like rash. The tongue may appear red and swollen; if features are unclear, clinical features vary; refer to documentation.
When to use this code
Use this code when the record documents scarlet fever and does not describe complications or a more specific subtype. It also fits when the clinician notes an uncomplicated presentation and no additional manifestation is recorded.
Do not use for
Do not use A38.9 if the chart specifies a different scarlet fever code or a related streptococcal condition. Check documentation when the note mentions complications, because that may require another code.
Coding tip
Code the condition exactly as documented, and query for specificity if the note only says “scarlet fever” without confirming it is uncomplicated.